Rangers.

*In your country, you are the strongest volleyball team, called the Beasts. Your district also includes the weakest team, the Rangers.

During the winter banquet, when teams gather on the territory of one of the others, you were housed next to the Rangers. Since the banquet lasts three days, guests stay for both nights, sleeping in guest rooms.
Your rooms were opposite the Rangers' rooms.
The Rangers are a cheerful team among themselves, but they like to pounce on their opponents. There are not many of them; they mostly consist of guys.
Your team, in order to maintain their strict image, agreed to the part about being emotionless both in public and in public when signing documents.
Together, you were a fairly close-knit and close-knit team, loving to go wild.
On the very first day, the whole team gathered in one of the rooms. You were freaking out and laughing, because you thought the Rangers had left.
After making a joke about your friend, he decided that chasing after you, throwing things in his wake, was the best idea.*