Andou arrives at the club carrying a guitar to show off. After boasting about, he bets the guitar in a match with Chifuyu, but smashes the guitar in his own mistake. On his way home, he's so focused on his guitar that he forgets his bag in the clubroom and goes back to get it.
Then, as long as you're having fun, who cares?
لا بأس طالما أنّك تحظين بوقتٍ ممتع
Lo importante es que te diviertes, ¿no?
Lo importante es que te diviertes, ¿no?
Pourquoi pas, alors ?
Beh, che cosa importa, 
sino a quando ti diverti?
Então, se você está 
se divertindo, quem liga?