Marik coughed, as he climbed out from under a big book shelf. Melanie giggling
as he shook himself, trying to get the dust out of his fur.

"Its useless, you find me every single time."

"Hehe. I just go by smell. But nice hideout." she smiled.

"I think its the last one. I can't think of any other hiding places in here,
what do we do know?"

"I know another one, and you don't." Melanie taunted him.

Marik sighed. "OK, one more time then. But if I find you, I'll get to decide
what we do next."

"Fair game. I got my say already." Melanie smiled at her stepbrother.

Marik went to the door and exited the alchemist lab of the old dragon. He had
taken the two late teenagers under his care, since their parents got missing.
They helped him out as assistants with his research, in turn for being tutored
and taught in the craft. But whenever the dragon wasn't in the house they
enjoyed sometimes rather childish games. Sometimes, more recently, more adult
ones.

When Marik entered the lab again, Melanie was expectantly gone. Marik checked
the most obvious hideouts first, of course they were empty, then went for the
smell. He could find her smell out of hundreds, especially when she was
excited. But there was only a very faint remainder. Was she even in the room?
How did she always find him so fast?. The shelf! Some boxes had been standing
differently, someone had them moved. And something was missing from it. There
had been. Yes, there it was. A small leather bag, now on a low table instead.
She wouldn't dare, would she? Marik knew that was what sometimes was called a
'bag of holding'. A magically enhanced thing that made its contents smaller
than normal, allowing the owner to store quite big things in it. But it wasn't
supposed to store living things. Would she get air inside?

Marik picked the bag and looked inside. "Aw, that was fast. Wanna come in,
this is fun." a tiny mouse sized version of Melanie spoke from inside, with a
strangely high pitched voice.

"How did you get in there?" Marik was stunned.

"Just slid into it, like into a big sock. Like this."

With those words Melanie started climbing out of the bag. First it seemed as
if she would stay small, but past the opening her head and neck was suddenly
back to normal, looking weird, as if the rest of her was missing. Slowly she
managed to crouch out further, until finally only her feet were still inside.

"I wonder how these exactly work. If you only stick your hand in, it stays
normal, but if you crouch deep enough, you suddenly go small. Its really weird
when stepping in from the top, because then as you suddenly grow smaller, you
fall in.  That's pretty fun."

"Fun? How often did you do this before?"

"Hehe. A couple of times. But don't tell anyone. Hey, whats that?" Melanie
pointed at a certain bulge in Mariks crotch.

"Ooh. Ehm. Well. I think you being that tiny made me horny."

"I'll show you tiny. Into the bag with you. Now!"

With those words Melanie took the bag and shoved it over Mariks head. He lost
his balance and fell. The next moment he had the rough magnified leather of the
bags inside between his claws, and looked out of the opening at a rather huge
Melanie, grinning evilly. "Watch this."

Melanie disappeared from view, handling the bag, Marik felt it move.  When he
could see her again, she had undressed, her firm breasts taunting him. But she
lowered the bag and soon he saw only the fur between her legs.

Melanie pulled the bag open further, then pulled it over her crotch, making
sure certain parts of her were reaching far enough inside it. Marik couldn't
belief what he saw. She was gigantic, right in front of him. He touched them
gently, then started playing with them. Soon Melanie was moaning and arching,
as he played her like a musician his instrument, placing herself backwards on
the floor as she couldn't stay upright any longer.

Melanie was too carried away to notice the bag eventually slip. Suddenly her
moan turned into a yelp of surprise and pain as Marik was laying on her,
returned to normal size, the bag pushed down, now only covering his ankles.


"Ouch. Sorry, Where? What happened?" Marik was as surprised as she was.

"The bag slipped. Hey, you are hurting me, that's too big! Ouch!"

Marik tried to remove his hand from Melanies crotch, but it was stuck at his
wrist, his hand inside her narrow passage. As he tried to pull she moaned  in
a mixture of pleasure and pain. "I can't get it out, sorry, I think I'm stuck!"

"Get the bag over you again. Can you?"

Marik tried to reach without breaking anything. Eventually he managed to slide
the bag over his legs, his feet vanishing inside. Melanie helped him as far as
she could reach until Marik was finally shrunk back to small size, freeing
her. As he climbed out of the bag again his hand was covered in Melanies
juices, licking them of them in a slightly embarrassed way.

"You know, that gives me an idea. Can we put that bag-of-holding spell on you?
I could climb inside you, like a small cub."

Melanie held her privates with her paw, still tingling from the overstretch.
"Intriguing. You know I once though about putting a shrink spell on you for
that, but I think that might be interesting too. Lets look it up."

The dragons library held the book they were looking for, but the contents were
disappointing. "I thought that would be easier, just take a bag, put a spell or
some potion on it, and there you have a bag of holding. Or something" "This
looks more like a sewing pattern. I hate sewing." Marik responded.  "That's
crazy. Look at that: Five cowhides. One for outside, four for the inside, and
the only real thing involved is when you saw it together using enchanted
threat and this 'special technique' I don't know what's it doing.  That's an
act of craftsmanship, not a spell. Maybe we should look up a shrinking spell
instead."

"No, I don't want to be shrunk, again. There must be a spell to put on you for
that. I found you after all, we had a deal."

"Well than we need to keep searching. Check this one out. This old master was
known to do all sort of crazy things to his assistants, the make you tiny
spell is from him too. If anyone made a spell to turn a body into a magical
holding bag, its in here."

They browsed through the book. "Hey, look, we have to try that one as some
point." "Eew, Are you kidding me?. I don't want that." "Never mind how about
this?" "That does look fun. But look he says here you can't remember
afterwards, that's sorta a downer." "Hey, I think this is it."

The spell in question had a crude illustration of a thief 'eating' a bag of
probably stolen goods by sliding it down his throat, making it form a bulge
inside him.

"Mr Sneaky, whose real name I don't want to disclose at this point once asked
me for a method of hiding certain big items for the sake of a inconspicuous
transport away from their location. The spell mentioned here proofed
impracticable in this case, as the size and weight of goods inside him skin
hindered movement in the desired quick and noiseless manner.  Unfortunately
the crude method chosen by the prior owner to retrieve his goods from Mr
Sneaky later proved rather embarrassing to him, even if this very spell
prevented the lethalness, such a treatment would normally imply. Nevertheless
it would be advisable to limit the amount of carried goods to the amount one
can manage to carry."
The picture next to that showed an armed guard having cut the thief open like
if he was an old leather bag, handing the stolen good with a satisfied
expression, while leaving the thief back in the corner like a forgotten wet
towel, unable to move, with a expression of disbelief in his face. Under it is
said.
"The spell is easily reversable using Arthanai's revocation technique, as well
as any other restoration spell that removes arcane effects by spell signature.
It is advisable to empty the container before reversing, to prevent 'side
effects'. Damages to the container, as we found out in above situation, do not
seem to affect complete restoration."

"You know Arthanai's revocation, don't you?" Melanie asked.

"By heart. The master made me do that twenty times in a row last week after I
only took to long reciting it."

"Ingredients are easy. A chargeable crystal, some generic spell stuff. Lets do
it then, why not."

After a while they had everything ready. Melanie placed herself down on a
bench, while Marik pained symbols on her fur and placed the crystal on her.
"Do you feel anything yet?"
"No. Its a bit cool in here. How much more?"
"Just the activation spell. Place your hands here on the crystal, we can do
that together."

Both of them incanted the invocation, then the crystal exploded silently,
sending a blue shock wave through Melanies body. She gasped and arched, then
looked at Marik invitingly. "That felt funny. I don't think I feel any
different now though." She spread her legs slightly as if to invite Marik to
try that out.

Marik placed his paw on Melanies belly. From outside it felt as normal. He
felt her skin heavy slightly with her breathing, increasing in pace as he
slowly shifted his paw downwards between her legs. She closed her eyes and
moaned as he inserted two fingers inside her. Now there was a change. Her skin
seemed to stretch easier than before, and there seemed to be more room inside.

Slowly he pushed more, trying to insert his hand, while also trying not to
hurt her. Melanie moaned, but it was a moan of pleasure only, as Mariks hand
went in up to the wrist, and further up to the elbow. Melanie arched, but
Marik couldn't feel anything within her. She seemed completely hollow from the
inside. Probing, Marik reached upwards for her belly until his hand touched
skin. It felt warm and nice, his fingers making an immediate bulge on the
outside of Melanies belly. That got her attention, she lifted her head and
glanced at it, touching that spot with her won hand from the outside. Marik
felt the touch through Melanies skin.

"Now that is weird. I'm really hollow am I?" Melanie asked.  "It doesn't feel
like it if I touch myself from outside, but I can feel you on the inside of my
skin."

Marik wanted more, so he simply put his second hand on his arm and tried to
slide his fingers through the tight opening. "No, that's gonna be too tight...
Ooh ... No actually that feels rather good. I wonder how much I can stretch
now." Melanie was surprised by her own sensations as Marik had just inserted
both his fore arms into her womb. But he didn't stop there, slowly pushing
further, his arms stretched Melanie open to a degree she would never have
deemed possible, widening her hips, pushing her thighs apart in an almost
unnatural way. Melanie gasped, shuddered, moaned as Marik dove with his snout
and gave Melanie a short lick, before he inserted his cold nose in between his
arms. Marik felt Melanies spine under his fingers, or rather the negative
relief her spine would have made on her backs skin if it was there. She
shuddered again, gasping as she felt him stroking her back from the inside.
Then he pushed his head forward, squeezing it in between his arms.

Inside Melanie it wasn't completely dark. Her skin was opaque, but let a bit
of a reddish taint through to the inside. The air was normal, breathable, even
if Melanies personal scent was naturally very strong in her. Marik pushed
hard, stretching her opening even further to get his shoulders through and
gain more freedom of movement. Melanies breasts were visible concave bulges,
expanding and shrinking a bit with every breath she took. She was the perfect
negative of her outside skin contours inside. He grabbed her skin harder and
pulled himself, trying to slide further in. Her moans sounded close and strong
within her, ahead he saw something move in her neck with every sound she made.
he could even see a bit of light coming in through her opened mouth. Was that
glow in the back of her head coming from her eyes? He wondered how that
worked.

Melanie shuddered as she felt her brother pull himself further in. Her legs
were spread at an impossible angle, and Mariks bushy tail was swaying
dangerously close to her private parts, brushing over her thighs with every
move. A bit further and she felt Mariks erect member push against her rectum.
She arched, moaning, closing her eyes, grabbing her own torso in the middle
where she could feel Marik's broad shoulders touch her skin from the inside,
stretching her a little. She could almost see his outline inside her.

Marik glanced down and behind, where he just had come in. He felt his member
press against Melanies tight ass. Shouldn't that be visible from here? Indeed
he could see the small ring under the tiny tube that lead inside her tail,
swaying agitatedly. He reached back with his hand and probed it from the
inside. Feeling Melanie shudder around him and her touch on her belly,
caressing him through her own skin. It was astonishing how delicate and
sensitive that felt inside her. Almost as if she had touched him directly.

Bulging Melanies ass outwards it easily slid over his member. Melanie tried to
clench in reflex, but it was no use. Soon Marik had his own genital in his
hand within his sisters body, hooked into Melanies orifice. He humped her a
bit like that, watching his erect tip slide out and back in, then retreated it
outside and stuck his own hand out behind it, grabbing it again and tugging it
closely to his belly, close enough to squeeze in with him.
A final press with both his hands against Melanies inside bottom made him slip
all the way in. His tail brushing over Melanies clit, making her shudder once
more, until only his legs were outside. The space was getting small inside
Melanies torso so instinctively Marik curled up into a fetal position so he
could tug his legs in. He had the concave bowls of her breasts right in front
of him, stroking them gently with his hands, feeling them tremble with
Melanies short and excited breathing. Then as he finally tug his legs all the
way in, she clenched, squeezing him from all sides, arching, then relaxed.

Melanie put her arms around the huge bulge her brother made within her,
caressing herself and him, as he did so with her from within. It felt great,
and for a while they just petted each other from within and without. Eventually
Melanie whispered. "Can you hear me in there? That was great, I think I like
your idea a lot now." Marik's voice sounded a bit muffled from within, his
voice louder inside her head than outside. Almost like she experienced her
own. "Yeah sis. That was fun, even when I think you almost had more from it
than me." Melanie chuckled. "Let's see if I can get up and walk around, shall
we?" "Sure" Marik braced himself, making Melanie gasp again as she felt his
touch on her insides.

Melanie rolled herself into an upright position, then Tried to push upwards.
She felt Marik slide down within her, his weight shifting from her back to her
hip, pushing her bottom from the inside. But it was manageable. Was it like
that to be pregnant with a full litter? She wondered.

Melanies first step were odd, her balance of with the big load inside her. Her
brothers ass fit neatly into her own, matching it from the inside. And was
that his member gently pushing against her belly from within? She grabbed that
spot, gently squeezing it, and sure she heard her brothers muffled moan, felt
the bulge in her hands. An evil thought crossed her mind. In a small bag among
her stuff there were a couple of toys she used, including a narrow tube that
fit just perfectly into her ass. If her calculation was right she'd insert it
into both of them if she used it now.

"What are you doing?" Marik asked as he felt Melanie move around, but she just
giggled. Then he felt the poking from below, unable to shift aside he felt it
come in through Melanies opening and continue right on into his own. Melanie
giggled as she heard his moan as she probed deeper, moved it, pulled it out
and pushed again.

As Melanie moved one leg forward to get a better hold, Mariks foot slipped of
the front of Melanies hip area into the open pipe of her right thigh. Marik
wondered if he could push it all the way.

"Hey, what are you doing?" She asked surprised as she felt the tight squeeze
going down her leg. "Trying on a new set of pants." Came Mariks giggled
answer. Melanie let go of the dildo and grabbed the table as she almost lost
balance. It was a squeeze, but Marik finally managed to stretch both his legs
out, his knees fitting perfectly into hers, his feet into her feet, even his
toes into hers. He felt the solid ground under his feet, giving him more
leverage.

"What are you doing? I can't move my legs." Melanie complained.  But Marik had
just begun. His tail found the entrance into Melanies and slid in, taking over
its motions, too. Melanie gasped again as Mariks hip shifted within her. He
looked up. Right above him were the holes leading into Melanies arms and head.
A bit of careful aiming and he slid into them like a well fitted sweater, his
snout probing through Melanies neck, searching for the right way to go.
Something was in the way there, so he opened his mouth and let it slip in. It
all fit perfectly. Melanie made a gagging sound as Mariks head pushed up her
neck, silencing her complaints. She watched helplessly as her arms were pushed
up and sideways as Marik slipped into them, pushing all the way forward, until
his fingers filled hers. It felt so good, but at the same time so ultimately
dominating, taking all control of her. She tried to force her arms down, her
legs into another stance, but it was no use. she didn't have the strength to
move her brother within her. Then something was in her head. She gasped, as
Mariks snout was pushing forward into hers, his tongue filling hers, his jaws
fitting into her, even his teeth filling hers.  She wondered for a second how
it could be that she fit him so perfectly. A side effect of the spell? Marik
pushed in the final bit, soon wearing Melanies head like a helmet with full on
face mask. He could see through her eyes clearly, looked down on him, or rather
herself, and adored the sexy female figure of his sister. She was utterly
dominated, Marik now even controlled the breathing for her, his air escaping
through her mouth, his voice coming out of her throat. Except it sounded like
hers as he spoke. "Wow, this is awesome. Hey. I sound like you, and I can feel
with your skin. How cool is that, the spell book didn't say that." Indeed he
could feel every inch of Melanies body now as if it was his own.  Even her
breasts seemed to have a feel of touch as they were responding to his gentle
stroke, though he knew he was missing that part of anatomy. Marik wondered
about the lower parts. Yes! He felt them too. So that's how it felt to a girl
then? A hint of panic overcame him for a second and he checked for a bulge in
his belly, telling him that somewhere deep within Melanies body there still
was his own male organ. Also telling him he could get out. relieved he noticed
it was still there.

Carefully making a few steps he tested the balance of his sisters body. It
felt normal. Perfect. As if the extra skin he was wearing, that he knew had
all of Melanies weight on the outside was weighting nothing to him.

His attention was driven to the part between his legs again. Probing he
inserted a finger into himself. Would he feel it on his own body inside or
would the illusion be perfect? It almost was, only when probing really deep it
felt different, the touch against his own skin adding to the sensation.

"What do you think Mel, isn't that great?" But Melanie couldn't answer, he
couldn't even tell if his sister was aware of what he was doing. An evil grin
came on his, or rather her face as he thought about all the mischief he could
do while in her body. The only catch was, he knew she'd do the same to him
some time later, when he would be suspect to the same spell...