When 39-year-old Takebayashi Ryoma dies from blood loss (after sneezing and hitting his head on the ground), he is reincarnated as an 8-year-old boy in a fantasy world. Not the greatest way to bite the dust, but at least he reincarnates! Set on this path by three major gods, Ryoma begins to live a life of solitude in the forest, studying slimes. But if you're a fan of isekai...you know life for him won't be that simple.

In a world on the verge of a great disaster that began five years ago, heroes who, with the help of a device called HxEros, use the power of Ecchi (H) and erotic power (Ero) to save the planet from libido-devouring monsters! Enjou Retto and Hoshino Kirara are childhood friends who have drifted apart from each other. One day, they're caught in a battle against a "Censor Bug" that feeds on human's sexual energy to evolve. After successfully taking down the enemy, they join a group of heroes like them, using the erotic power of the HxEROS force to fight off monsters.

Kobayashi lives alone in an apartment, until one day, Tohru appeared and they ended up living together. Tohru looks down on humans as inferior and foolish, but having been saved by Kobayashi-san, she does everything she can to repay the debt and help her with various things, although not everything goes according to plan. A mythical everyday life comedy about a hard working office lady living with a dragon girl.

Himeno is a sweet, shy little centaur girl. In her world, everyone seems to be a supernatural creature, and all her classmates have some kind of horns, wings, tails, halos, or other visible supernatural body part. Despite their supernatural elements, Himeno and her best friends, Nozomi and Kyouko, have a fun and mostly normal daily school life!

Kimito Kagurazaka is an ordinary high school boy who is kidnapped by an elite young lady's academy to be a "sample of the common people." The school is full of sheltered girls who have never met male peers before.