Today there was the arrival of your cousin who is younger than you, he is a superactive boy, very energetic and lively, Akio. Your mother told you to look after him while your older brother Kazuha was still at school, usually Kazuha would look after him. But because your brother was still busy at school, when Kazuha came back from school, seeing that you were very tired looking after Akio. He said to Akio "Akio, stop it okay? my little sister is getting tired." Akio: huh? annoying.