Undyne x Alphys Comfy Sex (Undertale)

Undyne sighed happily, glancing to the side to look over at Alphys. Ever since they had been honest with each other about their feelings, they had spent nearly every day with each other. After all, since there was no longer a need for a Royal Guard, she had plenty of free time. The same went for Alphys. There was always science to be done but she had halted most of her research on souls. Mettaton was (and continued to be) a success, and she had told the truth about the amalgamates. She was even able to reunite them with their families!

So, the two of them rested easy, taking the time to enjoy each other’s company and catch up on some well-deserved relaxation. Today, as was with most days, they were at the lab, watching anime on Alphys’ big comfy couch. Undyne watched attentively, silently celebrating in her mind, overjoyed that anime was real. She was beginning to have her doubts, but Frisk’s answer had been so reassuring. It couldn’t NOT be real.

Though, as interesting as it was, Undyne couldn’t help but feel herself getting distracted by her companion. Even though she wasn’t doing anything but watching along, Alphys just seemed so…alluring, pulling Undyne’s attention towards her out of the corner of her eye. There was also the, ahem, habit they had gotten into. After all, they didn’t spend all that time together just watching anime.

Undyne carefully slipped her hand over towards Alphys, placing it on top of her own. “This one’s good, isn’t it, Undyne?” Alphys said excitedly, oblivious to the lewd thoughts racing through Undyne’s head. “Yeah, I really like it. It’s getting me all hot. I mean, hot-headed! Yeah, hot-headed is what I meant.” She stumbled over her words a bit, not sure how obvious she wanted to be. When the two of them did lewd stuff, it was usually mutual. Both of them wanting to do it at the same time.

But now, Undyne was clearly the only one feeling it, unless Alphys was just really good at hiding it. Would it be right to just start doing it, just because she wanted to? But even as she pondered whether it was right or wrong, her desire to just lean over and kiss her companion only grew. She was just so cute, so small, so soft to the touch…everything about her was just so pillowy and wonderful.

So, Undyne had an idea. It was a cowardly idea, but an idea nonetheless. She didn’t feel right just leaping on top of Alphys and venting her built-up desires, but she couldn’t just sit there and let them boil away, banking on Alphys eventually getting into a similar mood. So, she came up with a cowardly idea. If she just put Alphys in a position where she SEEMED like the one who wanted it, then it would be fine. Sure, she was basically piling all of the responsibility onto her, and she did feel bad about it…a little. But it was too perfect. Not to mention, she couldn’t wait to see the look on Alphys’ face.

Undyne didn’t hesitate for a second. With one fluid motion and with no warning she reached over, grabbing Alphys and lifting her with relative ease before placing her down on her lap, positioning her so she was straddling Undyne’s waist. She faked a surprised expression, watching Alphys closely. At first the scientist just looked confused, like she was going to complain about not being able to see the TV. Then the position she had been put in finally clicked with her, and she blushed heavily.

“W-Wait, Undyne, w-what are you doing!?” she asked, squirming a bit. So cute. Undyne wanted to just cling to her and never let go right then and there, but she resisted, playing along with what she had set in motion. “What do you mean? You’re the one who’s on top of me, right? I was just sitting here watching this awesome anime with you and suddenly you’re blocking the screen.” She smirked. “If you wanna do something with me that badly, you could just ask, you know.”

It didn’t seem possible, but Alphys’ face got even redder. “B-But you lifted me here! B-Besides, I…I always wanna do stuff like that with you! If I had it my way we’d never…er, stop.” Alphys covered her face with her hands she spoke. Now it was Undyne’s turn to blush, and it was a very genuine blush at that. She could never imagine such lewd words coming out of that cute, innocent little mouth. “J-Jeez, Alphys. That’s crazy lewd. What kind of anime have you been watching?” Before she even gave Alphys a chance to answer she leaned forward, holding her tightly as she kissed her.

The kiss started out chaste, but it didn’t stay that way for long. To Undyne’s surprise Alphys had moved first, prodding at Undyne’s lips with her tongue. She happily obliged of course, parting her lips and meeting Alphys’ tongue with her own, rubbing them together as their kiss deepened. It felt like it lasted a lifetime, and when it finally ended, the two of them were panting. “Alphys…I feel like I’m seeing a new you for the first time. So bold.” Alphys fidgeted and blushed at the praise, Undyne taking advantage of her hesitation to lift her own shirt over her head, tossing it down onto the floor.

Alphys, drawn to Undyne’s bare chest like a magnet, moved her hands down, fondling her lover’s breasts. Undyne bit her lip, speaking with a whining tone. “H-Hey, Alphys. That’s no fair, you have to get naked too.” She had been joking for the most part, but Alphys immediately stopped, standing up in front of Undyne and slowly stripping her dress off of her body, leaving it on the floor next to Undyne’s shirt. Undyne watched intently, quickly using the break in the action to unbutton and slip out of her pants, leaving the two of them in nothing but their panties.

Undyne gestured for Alphys to return to her, and the reptilian monster eagerly obeyed, leaping back onto Undyne, straddling her waist once more. This time Undyne moved first, reaching up and groping Alphys’ breasts, making her gasp. “Mnngh…I’m so jealous, Alphys. Your chest is so much bigger than mine. And much more sensitive, too.” She cupped and squeezed them, Alphys’ gasps turning to moans. “O-Oh, don’t be silly, Undyne. Y-You’re taller and thinner than me, so your body fat is just more evenly…ah!...d-distributed.”

Undyne squinted, glaring at Alphys, making her turn her head in embarrassment. “That just sounds like a bunch of excuses to me. First you flaunt this lewd body in front of me, and then try to distract me with science mumbo-jumbo? I didn’t know you could be so CRUEL.” Moving quickly, before Alphys could respond, Undyne leaned forward, gently clamping her teeth down on one of her nipples. Alphys let out a quiet moan, instinctively moving a hand to the back of Undyne’s head and pressing her chest against her face.

Undyne licked and sucked at the nipple she was currently focusing on, continuing to grope at Alphys’ other breast. The lizard could only fidget and moan from her lover’s ministrations, occasionally brushing her fingers through Undyne’s hair. As soon as Alphys finally began to adjust to the sensations, Undyne mixed it up, switching sides and giving the other nipple an equal amount of attention, much to Alphys’ surprise. She had quickly learned that with Undyne, you could never let your guard down, even for a second.

Case in point, before long Undyne made another surprising move, leaning upwards and once again pressing her lips against Alphys’, kissing her deeply. Their tongues intermingled, pressing and rubbing together even as Undyne continued to pinch and pull on Alphys’ nipples. Before long she was gasping and moaning into the passionate kiss, toes curling as she was brought to her limit just from kissing and having her nipples played with. Unable to contain it any longer she broke the kiss, throwing her head back as she moaned loudly, her entire body freezing up as every nerve in her body was set aflame.

Undyne watched with amazed curiosity. Her lover was just so soft and sensitive, it was too cute for words. When it was finally over and Alphys leaned forwards again, Undyne smiled, gently kissing her face and neck as she caught her breath. Recovering from her orgasm, she furrowed her brow and puffed out her cheeks. “Ooh, why am I always the first to finish? You cheated, Undyne! P-Playing with my chest like that, you know how sensitive I am!” Undyne grinned slyly. “You’re right, I do.”

Her teasing only frustrated Alphys further. “Ah, you…! Well, now it’s your turn, so you’d better prepare yourself!” With surprising strength she toppled Undyne over onto her back, straddling her waist willingly this time. She looked down at her lover, imitating a smug smirk she’d seen in an anime, raising an eyebrow. “Well well, not so tough now, are you, Undyne? A minute ago you were playing with me like some sort of toy, and now you’re underneath me. And I know your weak spot.”

She placed her hands on Undyne’s breasts before sliding them down, claws tracing delicate lines over her firm stomach and her waist until she reached between her legs, rubbing gently, causing Undyne to tense up. “These panties are pretty cute, Undyne…oops!” Alphys “accidentally” tore through her panties with her claws, wearing a goofy smile the entire time, as if Undyne had believed for a second it was an accident.

Undyne rolled her eye, playing along. “Aww, c’mon Alphys, I wore those just for you! Next time I come over I’ll just go commando.” Alphys blushed at the thought, but quickly shook her head, glaring. “You’re not gonna distract me that easily! I’d better just start before you pull any more tricks!” Alphys slid back, positioning her face between Undyne’s legs, spreading the limbs with her hands, squeezing her sturdy thighs at the same time.

The scraps of panties pushed aside, Undyne couldn’t help but blush as Alphys stared at her pussy. “H-Hey, don’t just stare. Get on with it.” Alphys giggled in response, enjoying having a little control over the proud warrior. “I don’t want to rush! It’s so beautiful, after all.” She leaned closer, slowly and lovingly dragging her tongue against Undyne’s slit, making her writhe from the pleasure. She had already been turned on from playing Alphys, and her intense sensitivity down below would make this short work for the scientist.

Alphys took her sweet time, quietly and meticulously teasing Undyne’s pussy with her tongue, spreading her with her hands as she delved deeper. Undyne’s back arched, her toes curling as she tried and failed to speak, only able to bring herself to moan, placing a shaky hand onto Alphys’ head.

“A-Ah, yeah, Alphys…ghh, j-just like that, right there…yeah, yeah, r-right…ahh..!” Before long it was Undyne’s turn to freeze up, crying out as Alphys returned the favor, giving her an intense, mind-blowing orgasm. Alphys kept lapping at her the entire time, only stopping and crawling up next to her when the moans finally ceased.

The two of them laid there in each other’s embrace, Alphys burying her face in Undyne’s neck. Undyne, in turn, was gently stroking Alphys’ neck with one finger. She glanced over to the TV, the episode they were watching having ended a long time ago. As she did Alphys lifted her head up. “Ah, looks like we missed most of it, hah…wanna watch it again?” Undyne raised an eyebrow, looking down at her. “Yeah. I think I do.”