Responses
By saying this you sound like you think Rin is better than Kaiser, but just like Isagi, Rin wasn’t offered $3M to move to the best team in the world. Kaiser was. That’s a pro player. Wanting him to team up with Isagi to beat Rin is having a very low assessment of his skills.
I don't really see kaiser and Rin in the same team, so I hope Kaiser will stay with Isagi ( still naively thinking that maybe they will team up against Rin lol)