Well, yeah. Iria (the girl that was his first friend) is a tsundere queen but she cares a lot for him, and Spada (the delinquent) always supports him and if anyone tried to hurt Ruca I'm sure Spada would cut them up into tiny pieces.

Oh, Ruca is pretty good at teaching others! Unless you're Iria. And funny enough also Iria suggested that he should become a teacher He'll do his best!!