Death Saves the World

Kannazuki Shirognagi, who was born into a noble family, accidentally entered another world during his first internship as a Shinigami. Faced with people who were dying and about to turn into nothingness, he raised his Zanpakutō, abided by the rules of the Shinigami, and buried their souls. The sea is like a sea without knowing it and everyone is fascinated by it The tentative worlds include: Death, Black Basket, OP, King of Nets, Curse, Fumino, JOJO, etc. Purpose: Live your life seriously