Fukushuu Kansuisha no Jinsei Nishuume Isekaitan

Kousuke Kurono has finally taken revenge on his sister's murderer. Having no more regrets and nothing more to live for, Kurono took his own life. However, he found himself reincarnated to another world that only those with a tragic past can visit. Kurono was confused, but then he realized that his sister may have come to this world as well. With mixed feelings, he set out to look for her......

(Source: GC Novels, translated)