He is but, to be fair, he is 16. It can be hard to remember given the fact that he's taller than most adults (based Joestar genes in play there) but he is just 16. Even if you believe in true love, you still gotta fap those 11 months of the year.

I don't know why, but the girl on that magazine cover strangely reminds me of Yashuo Hirose, and it makes it even weirder since she's technically Koichi's counterpart…