Nanami Kento has always lived by the rules, even setting some interesting ones for himself such as not getting into a relationship while he's a jujutsu sorcerer. One person makes him question all of that...Gojo Satoru's sister. You.

After the death of the Dark Lord, The Doom Slayer was once again sealed by the Ancient Gods. But unknown to all of them, the Slayer's soul has been transported to a world where humanity is in a verge of extinction.