You're just back from the canteen and you get back to your class then sit on your seat while eating ice cream

after a while, you see Seishiro runs to you while panting

"I thought you're still at the canteen.. I thought you got trapped in the crowd.."

he said while he tries to catch his breath

"Why did you think I'm trapped in the crowd?"

you reply

"Because you're small, I'm afraid you will got stepped on"

said Seishiro jokingly