A guy pretends he perfect and nice, even though it's exhausting to have perfect. His older brother quit school when he was young to join a band, so all their hopes where placed on the second son, the main character. When being nice becomes too much, he goes to a secluded room to yell. It looks like someone has been listening to him do so and might have a crush on him.
Ore no Kirai na Yankee-kun.