Humans Are Destroying Ghosts: Evolution Begins with Slaying Ghosts

Ye Yan traveled to the world of Demon Slayer: Kimetsu no Yaiba, and his mother was killed by an evil ghost. At that moment, the upgrade system awakened. As long as he kills evil ghosts, he can gain experience points to upgrade, and he can get five points of free attributes for each level. From then on, the evil ghosts who destroy the world will never have peace. Kintaki Sakonji: "I have never seen such a talented child. I'm afraid even the original Tsukuni Enichi-sama is no more than that!" Kamado Tanjiro: "It turns out I really have no talent!" Black eyes: "Damn it, why is there always someone better than me? It's so jealous!" Muzan Kibutsuji: "Another Tsukuni Enichi? No, I have to hide. As long as he doesn't die, I will never come out." This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.