Sama Sutokazu Burusu (2015)

Three high school students all have a crush on Haru. After school, they follow Haru secretly until she gets home safe. One day, they see Haru go into an apartment with an unknown good looking man, Masahiko. The three students all become upset. They sneak into his apartment and take an expensive watch. Because of this, the three students become involved in a case.