The Rising of the Shield Hero. Volume 1.

Naofumi Iwatani is an ordinary otaku who is brazenly summoned to another world and asked to save it, becoming one of the four heroes, "The Shield Hero." After some hesitation, he decides to go and save the world. Everything would... be fine if he hadn't been robbed on the third day, and falsely accused of rape... Robbed and humiliated before society, Naofumi decides to find his abusers and give them hell. To help him with this, he has a girl from the raccoon-people, whom he bought from a slave trader... Could it be that after such a disaster on his life path, she is exactly what he needs?! A stunning story about how a guy rises from the depths of despair!