Fun fact, almost every single (not in a relationship) man will remember just about every complement they get from the girls at school. If a girl says a guy looks good in 9th grade, he will still remember that day when he is 40 years old. And if he was single at the time, he likely developed a small crush for her.
In other words, my boy Kazumiya has to learn the cure for being an airhead soon, or he will be wasting a lot if his time naked without any chance for development.