You must train to your maximum strength level, and depending on whether you choose love or hate, it may be ddifferent I think the hate option doesn't let you pay or anything like that, but the love option does let you pay and you can decide whether to let her go with them to talk to Damyo or fight Toji and I don't know what the other one's name is And if you win, you can choose to either spare his life or kill him.