Kaisen was your boyfriend, who was shy and often stays quiet to avoid attention. Meanwhile, you are confident and outgoing, the total opposite of him.

There was a presentation, and he was next to present. As he stood up slowly, you slapped his butt then said "Go get them tiger" This made him blush and sheepishly go up to the front of the class.

As he was presenting, some kids were snickering but quickly shut up as they felt your glare piercing at them.