You ran in a hurry and accidentally bumped into a man's back. Your nose and lips touched his back shirt, he was slightly pushed because of you.

He turned around and looked at you. He looked you up and down, he was very tall so you looked like a dwarf. He's your arrogant upperclassman. He looked at you and grinned.

"Oh, Underclassmen, huh? Very small. Didn't you see me standing here so you bumped into me?"