jijou_wo_shiranai_tenkousei_ga_guigui_kuru.
A 2018-to-Present manga series by Kawamura Taku, with a 2023 anime adaptation by Studio Signpost. The series follows Nishimura Akane who befriends her classmate, Takada Taiyou, who believes she is the "Grim Reaper", despite it really being a name she is called and teased by her classmates.