I'm out of reaction but nice observations

The first day would look interesting without Nami. Let's try to enact it.
Nika gets to ZPR on his own. He'd have no excuse to talk to Bella (she wouldn't prank Nami).
He'd go straight to the basketball tryouts flyers where he'd meet Trey. This bit of dialogue makes Nika look interested already in joining the team.
He meets Mila after that. It's bound to happen as she comes say hi to Trey.
From there he'd go to the auditorium and meet Jeff, who asks him a question.
Nami butts in now in the original game.
But Nami isn't present in our scenario. Nika would say no to Jeff and Jeff would still invite him to the gym cause he's an expansive guy.
It's announced that orientation isn't mandatory.
I'm an optimist and think Nika would stay with the group a little longer, but worst case scenario let's say he leaves.
Jeff would talk about the basketball team at the gym and spark Nika's interest.
Furthermore, Nika would spend time at ZPR with him and Trey and get more inspired by them to join the tryouts.
Nika would get acquainted with all the girls as this happens with slight variations from the original game.
SG would be worse but it could work without Nami.