MrNopeNope's manga / #delinquent(2)

Megumi, an Alpha, son of the great Kokonoe Academy Chairman, goes to avenge his friends who were beaten by a yankee wielding a metal pipe. But that yankee is Tsugumi, an Omega who doesn't use suppressants and deals with his heats through sheer willpower. Tsugumi loathes all alphas because they consider omegas just tools for reproduction and has sworn to kill them all. Megumi, whose behaviour is different from other alphas, confuses Tsugumi and leaves him torn between rage and desire...

Kirara is seen as a cute and girly boy by others, however he wants to be a cool and manly guy! So when two tall and cool boys move in nearby he starts to follow them around to learn how to be manly. As they grow up together, Kirara realizes that his feelings towards the younger brother, Ken, isn't just simple friendship. -