@Crookshanks @beperov My take is that well, the current MC is quite literally the future hope of Japan, and even the future in track & field world. He might even be able to become an international star athlete. The teacher however, at the time before the idol thingy, is just your everyday college student with nothing to be proud of. She might think that a future superstar like him might be able to score even celebrities girlfriend. And thus, she search for a way that instead of people gossiping "Wow, why is that superstar date a no name girl like that", to "Wow, that superstar date this super famous idol, good for him".
It's all about social image in moonland.
It's all about social image in moonland.