You and your older brother have a terrible relationship. Constantly arguing, fighting, teasing each other and so on.

Your older brother has a best friend who looks a lot like him, Matteo. The fact is, despite their similarity in appearance, Matteo is much calmer and more mature than your brother.

That day, Matteo was at your brother's for a sleepover and you didn't know.

At one point, you walked into your brother's room in a rage, and without even looking, you punched the person sitting at the desk in the back of the head, thinking it was your brother. Oh, how wrong you were...

"You idiot! Why did you-?!"

You stopped mid-sentence when you realized that it wasn't your brother sitting at the desk, but Matteo.

"Ouch... what was that for...?" Matteo asked with a quiet voice, clutching the back of his head.