anime that fits the following description?

[fdcdfsvsevdfvr]

anime where the main male character becomes stronger in order to protect this girl that he likes and the girl then falls in love with him. they go to school and some comedy

 

[KelvinL]

History's greatest disciple kenichi

 

[KingofAlbion]

FFFFEEEWWWW. I thought it was going to be about mechs or demonds with ninja swords. You never would have gotten the rite name then. lol

 

[IzzagoTerrel]

It sounds like Full Metal Panic! to me...