Work Text:
It’s not often Yugamu gets a willing volunteer for one of his tests.
Takumi Sumino had visited the bio lab today. It feels like he’s been visiting a lot lately. Sometimes for potions and meds, sometimes just to hang out. Takumi’s presence had become familiar. Comforting.
It gave Yugamu the idea to try something.
“Sumino, you’ve been visiting me so much lately! Should I take this as you trying to court me?”
“Not this time, I just wanted to pay a visit, is all,” Takumi responds. Yugamu doesn’t miss the way he fidgets just a touch when he says that.
“How would you like to help me with something then?” A simple question, Takumi thought. Knowing Yugamu, that question could mean anything from helping him gather… dubious materials, to being a sounding board for his drug ideas, or just bringing him meals, given how he practically lives in the lab.
Until now, he’d never actually helped Yugamu with an experiment.
Takumi responds, “Sure thing. What do you need help with today?”
Takumi often helped out with Yugamu’s tasks. In the beginning, Yugamu’s requests were met with a bit of hesitance, but now? It almost seems like he perked up whenever Yugamu asks for assistance. The way he perks up made Yugamu’s heart skip a beat.
“An experiment. I’d like to bite your neck,” Yugamu says, punctuating it with… a wink? It looks like a blink with his eyepatch, but it does have an energy to it.
“Wai- wait-wait-wait-wait, what?” To no one’s surprise, Takumi’s face reddens and he practically squeaked this response.
That response was worth it. Takumi is just way too cute to not tease, Yugamu thought. He laughs softly. “In all seriousness, I was wondering. You know how we absorb hemoanima from commanders and it makes us stronger? I was curious what would happen if we drank a little bit of each other’s blood. Of course drinking my own would be inconclusive, but what if I drank yours? Or you drank mine? I’m quite happy either way.”
A pause. “That sounds…a bit dangerous. What if one of us goes too far? Wouldn’t that kill us?” Takumi sounds hesitant, but not fully opposed from the sound of it.
“Not to worry, Sumino. I have a plan for that,” Yugamu pressed a syringe into Takumi’s hand. “If you feel I’m going too far, just stick me with this. It’ll knock me right out. Oh, Sumino stabbing me with something, it sounds so tempting,” Yugamu’s excitement ramps up at the end, he starts hugging himself and his breathing picks up. “Maybe we should do that just for fun sometime.”
Takumi takes the syringe and sets it aside. “Uh… Thank you, but I don’t think I’ll be needing that. I know you won’t take too much.”
The way Takumi trusts him has Yugamu feeling like his heart will burst. “To place your trust in a known killer just like that. My dear, sweet Sumino, you don’t know what you’re doing to me!”
“Yeah, yeah. Why don’t we get this started already?” Takumi hops onto the exam table. Yugamu climbs onto him, to which Takumi blushes and asks, “Do you have to be this close?”
“Well of course, how else am I supposed to get a good angle?”
Takumi rolls his eyes. It wouldn’t be Yugamu without his flirtiness. “Fine then, looks like you got the best seat in the house.”
Yugamu puts his mouth up to Takumi’s neck, and he feels the muscles tense up under his breath. He teases Takumi with “It’s okay to be nervous during your first time.” A normal kind of exchange for the two. A soft laugh, and Yugamu can feel Takumi’s neck relax. He’s greeted with a playful punch to his shoulder.
“Come on, just do it already. The suspense is killing me,” Takumi whines.
“The anticipation is half the fun! But I suppose if my partner can’t wait…” Yugamu bites down. Not hard, at least not at first. He has some modicum of restraint after all. Of course he has to bite harder though. Gradually applying more pressure, he breaks the skin. Yugamu hears Takumi hiss at that. At the metallic taste of blood, Yugamu starts sucking and lapping away at the fresh wound.
And then Yugamu feels it. That affection he felt from Takumi putting his trust in him? It blossoms forth, all encompassing, nourished by the crimson liquid flowing between the two. From the way Takumi is now clinging to him, it has affected both boys. Yugamu wants to stop latching on, to try to save face while he can, but he just can’t bring himself to lift himself off Takumi. And Takumi? He just hugs him. Tightly. Yugamu does not like feeling exposed like this.
Eventually, he manages to pry his mouth off Takumi’s neck. Yugamu debates making a bolt for it, but Takumi grabs his hands. “Wait! Those feelings… you… you felt them too, right? It, uh, felt like my own, but also not.”
Yugamu does not like feeling pinned like this, like a bug on a board. He debates still leaving anyway, seeing how long Takumi will hold onto those stretchy arms of his. However, it would be rude to leave the boy whose neck he just sucked at alone like this. Also, he doesn’t miss the way Takumi admitted his own feelings there.
Yugamu looks away, trying to play it cool and says, “I suppose so. Perhaps the feeling was so intense because it’s mutual.”
Takumi reaches forward and hugs Yugamu, pulling him back in. Surprised, Yugamu blinks and hugs back. Takumi asks, “Please, can we stay like this for a while?”
Instead of answering, Yugamu rests his head on Takumi’s shoulder. Takumi doesn’t see the absolutely joyous grin he has. He doesn’t need to to know it’s there.