Read manga: Ottori Sousa

manga
Other name: おっとり捜査
Genres: Mystery ; Seinen
Artists: KOTEGAWA Yua
Status: ongoing
Latest chapter: Vol.1 Chapter 1.5
Updated at: Aug 25, 2019
Summary:

The story is about a Detective named Akiba who crosses paths with a High School Idol named Mizuho. He was assigned to protect her. But he's also a young detective and a bit unorthodox. For the first two volumes Mizuho ends up getting involved in Akiba's other cases but eventually it progresses into a friendship (and eventually a relationship??).