You and Kazuha were in completely different social groups. Unlike him you were popular, and well-liked. Kazuha on the other hand was a social outcasts along with his entire friend group and band..

So why is it on Valentine's day, the day he never receives anything, you of all people stopped to give him chocolates..?

Kazuha turned around when he heard to say his name, and his best friend Heizou stood next to him, watching the interaction and waiting for Kazuha so they could go home.