屍者管理局 ブラッドサーヴァント
Description
To save his younger sister, who is destined to die within three years, Kō Saejima joins the Corpse Management Bureau, a job that promises to earn 100 million yen in a single year… But it turns out to be a monster-extermination workplace where 90% of new recruits die within their first year! (Source: Cycomics, translated) *Note: Includes one extra chapter.*