Yamamoto had had what was expected of him brought up by the man at the desk when he'd asked about where he was and why. He may be innocent and naive, but he is far from dumb. He already knows that he's supposed to have sex and that there are people with many different preferences inside the city. He doesn't think that he should be one of them, however.

"Hehe. Yeah, maybe I'll get the hang of it!" He says cheerfully, but he's far from serious. In reality, he's actually quite nervous. Yamamoto already knows that he has to be responsible for his partner if he ever has one. Sex may be kind of a requirement here, but he doesn't plan on thinking so little of it that it's something he'll do in passing. He expects it to be something meaningful, with someone he likes.