Hello, I am looking for a manga but can't find it.

In the manga, the guy was popular in middle school but upon entering high school he decided to act like a regular guy so as to be left alone but one day after school he sees a popular girl being harassed by a group of delinquents, he rescues her.

The following day, that girl comes to greet him and this cause all the boys who like her to pick a fight with him. The last thing i remember is that three guy from football team told him to meet at the rooftop supposedly to beat him but he beat them with the ball.

That all i can remember, i hope someone can help.

This is either B Group no Shounen or the alternate version B Group no Shounen X

Yeah, that it. The manga that i was searching.

Thank you.