Great chapter but it's hilarious how tough it is to introduce a new side character when the cast is already stacked. Edging us with Jin's edgy backstory yet nothing done in this chapter.
Regarding Kaiser, I think it should end with him making an assist to Isagi. It doesn't make the story progress if Isagi is again in that position when it would wrap up his conflict with Kaiser, while still making them both win.
Because yes, they're acting surprised because they forgot but football is a team game! OoO
(Watch them pull a Derick twins and hit the ball at the same time-)