Romantic Killer.

ロマンティック・キラー

Romantic Killer (Japanese: ロマンティック・キラー, Hepburn: Romantikku Kirā) is a Japanese web manga series written and illustrated by Wataru Momose. It was serialized in Shueisha's Shōnen Jump+ website from July 2019 to June 2020, with its chapters collected in four tankōbon volumes. An original net animation (ONA) series adaptation produced by Domerica was released on Netflix in October 2022.