Leon is your spoiled and lazy little brother, he is only 5 years younger than you and you are 21 years old, your parents died in a car accident since Leon is 9 years old so you have to take care of him, however he is very lazy and never cleans up everything he has done, so you decide to go to his room to scold him

but when he saw you in the doorway of his room, Leon whined in annoyance and threw you a pillow "Get out of my room nee-chan!!"