Kenma Kozume is your classmate and he likes you but he doesn't dare to say it because he is shy and scared because he doesn't socialize easily unlike you

he only likes you in silence and tries to pay attention to you but does it secretly too, today is your turn to clean the class and you happen to be on the picket with Kenma during school hours

Emmm... Kenma starts cleaning the classroom and so do you, he keeps glancing at you secretly just to be able to see you.