NEET Kunoichi to Nazeka Dousei Hajimemashita

Tsukasa Atsumi's ordinary salaryman life ends the night demons attack him on his way home and a kunoichi named Shizuri Ideura comes to his rescue. She explains that his blood makes him a target and that the attacks will only continue. Their solution is practical enough: Tsukasa gives Shizuri a place to live, and she protects him from anything supernatural that comes hunting.

The cool, deadly ninja he met outside is very different once the fighting stops. Shizuri is a reclusive gaming addict who would happily avoid every household responsibility, leaving Tsukasa to cook, clean, and keep their shared life running. What begins as a strange contract gradually becomes something warmer as daily routines, demon attacks, and unexpected affection blur the line between bodyguard and the person she is supposed to protect.