Hello! I don't think I'd implement that, since it would break the logic I've set for the story. There's a reason why it's necessary for Kendo to leave in order for Arato's route to happen. Unlike Kendo, Arato *did* stay in the resort, lurking in the shadows like a Disney villain. And within the specific circumstances of their encounter, Arato has no logical chance of winning against Kendo.
So while I know there's people who'd like to see that outcome, it's not one I'm interested in making. Suggestions are always appreciated, though.