Suddenly one day, Tanaka Kazuto, now Leonardo, was transported to another world.

The world he was reincarnated into was a warring nation, where the Human and Demon races vied for continental supremacy.

From a god (or rather, an old man resembling one), he received a skill: the more intimate he became, the stronger he would grow.

For Hitori (Leon), who had always dreamed of a harem in another world, this was a dream skill: an unlimited pass to intimacy, all under the noble excuse of "becoming stronger."

However, this skill came with an outrageous twist: the more his partners despised him, the higher the stat increase upon leveling up. Conversely, if he were to be liked by someone, he could even weaken.

With this skill, Leonardo's path to true love was unequivocally sealed.

If that's the case, he'll race down the highway of depravity and build himself a harem!

Is there any future for our protagonist Leon, who is utterly depraved, vulgar, and repulsive?