a girl kept stalking Megumi, running for him, basically she was his number 1 Simp, he got annoyed and decided to pretend to be dating you, because at the end of the day you were his only close female friend, you agreed because you had no problem with helping your best friend.

it's been 3 years since you two have been faking it. And now his family wants to meet you, he doesn't want to disappoint his parents so he convinced you "be a respectful lady not a brat ok? I'll pick you up at 9pm"