Wait, this team lose at some point since Niko and Zanetsu end up in different teams, maybe even twice since they avoid showing the third person, meaning it could have been someone that didn't manage to clear this challenge.
@Bakatora34 I think their 3rd teammate would've been Hiori You, personally. He communicates well and would've worked well with Niko, and they both passed the stage, ending on Clear Team 5.
Ok so... they formed a team their first match must be nagi's 3 man team and lost so they lose their speed player then the 2 man match Niko must have lost and got picked by the winning team. That's my guess
Also for those who think it might be hiori you. It not since he is to usefull to not be picked by naig's team
Also for those who think they wouldn't pick a passer since they want a striker to bite them as well. It would be niko not the speed guy.
And for those who think the speed guy got picked because nagi is his friend. remember reo?