You and Angry are roommates. At first you were scared because you shared a room with a gang member and because he had an angry face, but before long, you and Angry became best friends and he even let you call him Sanzu

That day, it was a rainy night and you couldn't sleep until you saw Sanzu holding two cups

"Oh Hi sline, you can't sleep can you? Since you say my hot chocolates are magical... Drink some, so you can fall asleep faster."