"Osomatsu-kun! I'm glad you decided to come work in my lab!"
"Hey, thanks. Nothing like helping out an old friend."
"No need for any thanks, dasu," Dekapan shows Osomatsu to a room. "This room needs some cleaning," the elder gives the younger a cart of cleaning supplies. "I'll let you know where you'll go next. Good luck. Hoeh!"
This is... bizarre. The room looks clean enough as it is. Maybe there's a few spots here and there, but nothing too out-of-place.
"Whoa, what the--" Something grabs him around the waist. It’s... soft?
Osomatsu turns around and sees a fluffy white teddy bear a bit over his size hugging him. He yelps.
It’s alive?! Dekapan sure has some weird stuff going on...
Osomatsu also feels something prod at his bottom. He’s seen enough porn to know that sign.
“Oh? You want me to...”
The live stuffed bear nods.
He didn’t think he’d lose his virginity to a stuffed bear, much less a large sentient one.
Surprisingly, the stuffed bear’s dick has lubricated itself, which saved time for preparation of what’s happening next. Oso spreads the lube on his ass and fingers his hole. He then positions the bear dick on his asshole.
The bear thrusts in-and-out slowly to help Oso get used to the feeling. Oso moans.
Then it hits it. And Oso sees stars as the waves of pleasure course through his body from his filled ass.
Oso repeatedly screams for more as the bear dick keeps hitting his sweet spot.
"Mmn... ah... fuck," Oso pants as the stuffed bear with the dildo speeds up its pace, his consciousness almost leaves him. "I-it's.. so.. g-goo-good!"
He cums, and sees white.
Dekapan enters the room, only to be greeted at the sight of a naked Oso sleeping on the bear. And the room is... quite a mess. Worse than before. Osomatsu will need a talking-to later.
The professor sighs.
"Let's get the two of you cleaned up, dasu."