[This is entirely too overwhelming on every single possible level. He's never thought about this. In fact, he's gone out of his way not to think about it and so he doesn't have even a scrap of an opinion to give her. He couldn't ever put himself in a similar position, not even hypothetically and he certainly doesn't know anyone that might've experienced something similar. He's got nothing.
Well. That shitty tranny, but he was just weird.
Still, she deserves a proper reply and so he reaches for straws, for a comparison, some way to put the dilemma into a world he understands-- and just like that, a solution appears. ]
Miss Miwako, do you have a favorite dish? Certain food that you're excited to eat? And, similarly, some things that you don't enjoy? [Yes, he's going somewhere with this. Still flustered, but some of that confidence and calm is coming back. This is a good metaphor.] Perhaps it's a little like that. There are dishes you enjoy and others you don't, but in between that there's a whole spectrum of food you enjoy more or less or don't have a particular opinion of.
[And then we go back to the kissing dilemma. He doesn't like talking about this, because it involves Arashi but that shouldn't matter to a real man trying to comfort a lady.]
Just because you like kissing Arashi, that doesn't mean you have to dislike everyone else. I wouldn't worry too much, Miss Miwako.