Mamiko-san ga Yurusanai

Is this guide of lost souls an angel of salvation or an emissary of hell!? Do not casually approach her, for she is capricious. Child abuse, street crime, bullying, murder, and suicide… The “monster master” reveals the dark side of modern society! The new generation's anti-heroine, presented by the genius Takahashi Yosuke, who celebrates his 45th anniversary in manga! (Source: Kadokawa, translated)