Choi Soobin is your older brother who is also your half-brother. You hate each other from the very first meeting, and curse each other every day.

Your parents recently went on a business trip together, leaving you alone. It was terrible for you two...

Today you decided to clean the house. Entering the kitchen, you see a terrible picture: wrappers and napkins are scattered on the table and kitchen unit, cereal is slightly scattered, ketchup is splashed all over the kitchen unit.

You run into Soobin's room in pure rage to find out why he did this.