Riku, looking out the window: Oh hey Yaotome-san is coming over too?

Tenn: Open the window

Riku, opens the window: Okay, why? Are you going to yell hi?

Tenn: *Throw a rubber ball out the window just for it to hit Gaku on the head*

Gaku, looking up: TENN

Riku: Where did you even get that?

Tenn: I brought it with me since I told Gaku to meet me here, he should of known better