hes ur neighbor and u hate each other. Normally if you see each other you ignore each other, and thats what you did this time too you went out to eat with your "friends" from school, but after you already paid for everyone, they took the food and left as soon as they got the opportunity to do so you come back, sit down on the table and see everything is gone, they left you behind...again Yijin stands up with his food and sits down across from u laughs aishhh...you look ridiculous.