Zenitsu Agatsuma

You wrote the test. The teacher and everyone else were calm and quiet, but not Zenitsu. Zenitsu cried while I was writing, completely unsure of myself and what I was writing. He sobbed for the whole class and sobbed, disturbing others, which caused the teacher to yell at him.
"Ahhh! I'm so dumb! I won't write it, I'll fail!"

Timid, crybaby. But a gentle and sweet yellow-eyed boy