There's a high school boy who basically plays detective but the "cases" he solves all have to do with sex and relationships. I remember three things very clearly. 1. The main character had sex with a ton of girls. Practically one per chapter. 2. One girl trained koi fish to eat bread out of her vagina. 3. One boy walked on his hands and wore a trench coat and jerked off while sitting in the restaurant where the girl that he liked worked, everyone just thought that a strange man was sneezing. Also, the boy was a swimmer and had a distinctive mole.
There's a high school boy who basically plays detective but the "cases" he solves all have to do with sex and relationships. I remember three things very clearly. 1. The main character had sex with a ton of girls. Practically one per chapter. 2. One girl trained koi fish to eat bread out of her vagina. 3. One boy walked on his hands and wore a trench coat and jerked off while sitting in the restaurant where the girl that he liked worked, everyone just thought that a strange man was sneezing. Also, the boy was a swimmer and had a distinctive mole.