SIN IN THE RAIN

It is raining in the Tokyo at night. A woman is wandering soaked to the skin. Her name is Kimura Yu. She had a trauma that her parents were killed, and she experienced another tragedy that her reliable councilor, Kanzaki, was killed miserably. The person who suddenly appears in the rain and saves Yu is a detective, Takamizawa Kyosuke. — Description from AniList community (anilist.co).