Shinigami no Torisetsu

After her mother's death and her father's remarriage and relocation for work, Sachi chooses to live alone. She feels disconnected in school and increasingly loses her will to live due to ongoing hardships. During this time, she encounters the God of Death, who promotes the idea of "health first." This deity is distantly related to Sachi and lives among humans as a health education teacher at her school, observing her closely. His true purpose, however, remains unclear.