SKET DANCE 

Prototype version of Sket Dance, published in Akamaru Jump. The Sket Dan is a group created for the purpose of helping people. However, with there rarely being any clients, the three members Bossun, Himeko and Switch spend their days lazying around. In walks a client, Mimori Konno. She wants someone to deliver an envelope with a heart mark in her stead which was dropped by her crush, Naoki Nishio. Bossun admonishes her to deliver it herself. However, when the Sket Dan discover that inside the envelope are pictures of half-naked girls, they change their minds completely and set out to investigate. (Source: Sket Dance Fandom Wiki) Originally published in Akamaru Jump supplemental volume, later republished in the SKET DANCE Koushiki Fanbook collection.