Big Can of Cans

I was kinda surprised seeing a big and long lines a few meters from the shuttle bus lines. They changed the bus stop? No no… there was this expensive car parked in front of the cafetaria ★

Whadda??? And there was also a man, pouring some sort of liquid out from the big can into a small cups. There was also a girl who passed those cups to some students who had spent their time lining.