That’s a really cool and creative idea! Adding high-stakes competition for multiple characters would definitely be interesting.
I'll give you a little spoiler: we actually have some 'companion exchange' planned, but not as a full mechanic—it will be more of an option at a certain point in the Akira-Mike progression.
For this game, we’ve decided to keep the focus strictly on Akira, and at this stage, we just can't technically implement a completely new character for NTR mechanics.
Regardless, huge thanks for the feedback!