>>55214530Please remember that both the protagonist and Nemona are literal battle prodigies, and that the latter is a battle-crazy autist who can only function socially through battling and has canonically only been getting stronger after the events of The Way Home because the protagonist has offered a feedback loop incentive to continue improving now that she finally has a rival that's on her level.
The moment Kieran got off his own autistic grind was the moment he'd falter to such dedication, so it's no real surprise.