Sugarless

Sugarless (シュガーレス, Shugaresu) is a manga written and illustrated by Hosokawa Masami. The series was serialized in Weekly Shōnen Champion from 2010 to 2013.

Plot
Shiiba Gaku wants to be the boss of Kushima High, which is popularly known as “Windmill”. In order to become number one, he has to face many challenges because the school is full of tough opponents. Just when he decided to take the fist step, an afro-looking guy interrupted him. What will happen from now on? Will he be able to realize his dream?