Uramiya Honpo Reboot

Detective Yadorogi Satoshi becomes aware of Uramiya - a mysterious grudge troubleshooter. Uramiya takes revenge on behalf of her paying clients and offers to kill or inflict social embarrassment upon their target. There are four people who work for her. An unnamed information researcher, otaku Shiwasuda Takeomi, high school student Sugikawa Rina and womanizer Shu.
Detective Yadorogi tells others in the police bureau of the mysterious Uramiya, but nobody believes him...
(Source: AsianWiki)
~~ Adapted from the manga series "Uramiya Honpo" (怨み屋本舗) by Kurihara Shosho (栗原正尚).