Later, when they regroup with Yuji and others in Jujutsu High, Yuki greets Choso warmly and pays him silent respect. Her subdued smile when Choso becomes choked up after being called "brother" by ...

That’s something you need on your team during turn-based combat. Yuji Itadori, the Curse King’s vessel, is the MC of the anime. So, naturally, he is one of the strongest characters in the game.