After I Transmigrated, I Seemed to Become a Yeast Cell

With one blink, Dian Qing finds himself in a future world where students have to take a bus spaceship to and from school.

Before he can even get used to the classes in this future world, Dian Qing discovers something terrifying: a lump has grown on his arm, and through the translucent skin he seems to see a tiny person lying inside.

Dian Qing rushes to the infirmary. "Do I have some kind of new parasitic disease?"

The doctor says, "What did you learn in biology? Do you know you're going to have a baby?"

Dian Qing: "Huh? I'm a man."

The doctor pulls out a copy of First-Year Biology, Volume One, and opens it to show Dian Qing.

Dian Qing: ...So everyone in this world reproduces by budding? Like giant yeast cells. ==

[The protagonist has a CP. In this story, rubbing an arm against hair allows them to exchange genes.]

(Hair is made of protein, so there's absolutely no problem. After all, normal arms in the real world can't have babies either.)

Theme: Absolutely no sexual content