czzn's Manga

Once the bullies target you, it’s game over. The school is run by tyrants whose favorite hobby is tormenting the weakest kids in class. But then Gray arrived. This mysterious new student threatens to dismantle the established order. He may be small in stature, but his calculative and brutal fighting leaves unsuspecting opponents lying on the floor begging for mercy. Now the school's toughest bullies have to scramble to take down this new and unusual hero.

In the world where the sea level has risen, the sea has already covered the continent.
In the world where the land can not be found anymore, the family of the boy, 'Bota', lives in a small boat and wanders around.
I am looking for another 'man' somewhere and I am safe in the rules that my father has set.

I moved to a new school to start a new
life, but how'd I end up becoming the
school top dog's boyfriend?!