Leon/Kamui/Takumi 3P

"And that's what happened." Kamui finished explaining.

Leon looked annoyed, while Takumi looked outraged.

"You... You had sex with Ryouma-nii-sama!? In the CASTLE!?"
"What, did you expect us to do it outside?"
"What part of "blood-related siblings" don't you get!?"

"Actually, I have to wonder if Kamui-nee-san is really your sister." Leon mused.
"What did you say!?" Takumi rounded on Leon, looking furious.
"None of you can turn into a dragon, can you?"
Kamui was uneasy by the tension between the two. Leon had been making fun of Takumi ever since they'd arrived at the castle, and if what Takumi's subordinate, Hinata, said was true, it was just a matter of time before he snapped.

"I've got an idea!" She said without thinking. "Why don't you guys try doing me?"

"What." Leon stared at her as though she'd grown an extra head.
Takumi was completely slack-jawed.

"Kamui-nee-san, I'm fairly certain normal sisters don't ask their brothers to have sex with them." Leon sighed.
"Normal brothers don't take their sweet time watching when their sister visits the healer and has to take off their clothes, either." Takumi added derisively.

Leon glared back.

"Normal brothers ALSO don't watch their sister's backside when she walks."
"I was keeping an eye on her!"
"Oh, I could tell."
"So, are we doing this or not?" Kamui asked impatiently.

"Ugh, no." Takumi groaned. "There is no way I'm- You're already undressed."
"Camilla-nee-san mentioned this before." Leon didn't seem terribly surprised. "She always said you got dressed and undressed rather quickly."
"And...?" Kamui gave him an inquisitive look.
With a sigh, Leon began to undress. Not wanting to be outdone, Takumi did likewise.

"So we need to be in this position... Why?" Leon asked.
"We tried oral and vaginal at the same time." Kamui explained. "It went badly. It went a lot better when it was both of them doing vaginal."
"And what makes you so sure that both of us will be able to do this?" Takumi asked with a scowl.
"Don't worry." Kamui said reassuringly. "Both Marx-nii-san and Ryouma-nii-sama were able to fit, so you two should definitely be able to."

Kamui did not notice the offended looks on Leon and Takumi's faces as she tried to decide whose cock to lower herself onto.

Ultimately, she decided have Leon penetrate her while she faced Takumi.

"Are you ready, Leon?" She asked gently.
"Y-yes, Onee-san." Leon, sounding unusually nervous, answered quietly.
Kamui slowly lowered herself onto Leon's cock. Leon let out a soft moan.

"How's it feel to be a man?" Kamui grinned back at him.
"It feels rather... Nice." He smiled back.

Kamui turned to look at Takumi and sighed.
"Don't give me that look, Takumi." She sighed. "Come here. You haven't hugged me at all since we met."

"Th-there's a reason for that, Kamui-nee-san." Takumi protested, but slowly edged toward her anyway. He pushed himself in as gently as he could, but it evidently felt much better than he expected.

Before he could stop himself, he'd pressed his body against Kamui's and smashed their lips together. Kamui seemed startled, but not adverse to the affection. On the contrary, she seemed to welcome it, allowing Takumi to explore her mouth with his tongue.

"Heh." Kamui chuckled when he pulled back. "I suggested a hug, but you jumped right into the kissing."
"I-I'm sorry, Kamui-nee-san." Takumi looked away, his face flushed.
"I think you liked it, though." Kamui giggled. "You're... You're getting bigger inside of me. Not that I'm complaining."

That only served to make his face redder.

"If you don't mind my interrupting?" Leon coughed.
Kamui giggled again as she leaned back to let Leon kiss her.

While this was happening, Takumi examined Kamui's nipples. Without thinking too much, he gave them a small squeeze.

"Don't do that without warning." Kamui broke off her kiss with Leon and gave Takumi a scolding look.
"It seems you're full of mistakes today." Leon smirked.
"What did you say?" Takumi demanded as he moved closer, pushing himself deeper into Kamui.

"Ah!" Kamui let out a small gasp.
It had hurt, but it also felt rather nice.

"I merely pointed out that you did things without warning Onee-san what you were doing twice in a row." Leon explained, pushing himself in closer (and deeper) as well.
Kamui clenched her teeth, torn between pain and pleasure.

"I'm surprised you haven't already come." Leon added. "You've done everything else ahead of schedule."
"Well, we can't all be as wonderful as you!" Takumi exclaimed. "On the other hand, I didn't hear Kamui-onee-san say YOUR dick got bigger."

"It... It got bigger." Kamui interrupted.
"Onee-san, are you alright?" Leon frowned. "Did the imbecile hurt you when he was fooling around?"
"Fooling a-" Takumi repeated Leon's words before pushing even closer. He was practically squeezing Kamui's body as he got right in his face. "Kamui-onee-san seemed to be enjoying most of what I was doing until you opened your mouth!"

The two continued to argue until Kamui started groaning.
"Onee-san, are you SURE you're-" Leon's voice sounded somewhat hazy, but Kamui didn't get a chance to dwell on it, for the door to the room slammed open.

"Kamui, are you alright?!" The worried voice of Marx rang out.
"Are we under attack?!" Ryouma demanded. "Takumi, get your bows, we need to prepare, just in case we need to- WHAT THE HELL ARE YOU DOING?!"

Takumi looked rather scandalized, while Leon gave Ryouma an exasperated look.

"Ryouma-nii-sama! This is... I..." Takumi tried to explain.
"We're having sex. I'm fairly certain you know what that looks like Prince Ryouma, especially since you were in the same position the other night." Leon sighed.
"No, we aren't!" Takumi protested.
"Don't get smart with me, Prince Leon." Ryouma growled. "And Takumi, you are balls deep in her! I'm surprised she hasn't started screaming!"
Takumi frowned and looked at Kamui, who looked rather out of it.
"What are you waiting for?!" Marx demanded. "Pull out!"

He grabbed Takumi by the arm and began to pull, while Ryouma did likewise with Leon. Unfortunately, the sudden friction sent both Leon and Takumi over the edge, and Kamui was once again filled with her brothers' seeds. She fell to the floor without the support and glared up at them.

"Help me to bed." She growled. "Now."

Marx grabbed the blanket from Takumi's futon and wrapped it around her. He politely (but icily) bade Takumi goodnight as he carried her out of the room, with Leon right behind him. Ryouma glared at Takumi and said, in a tone that left no room for argument,

"Grounded. Forever."