Meh, the epilogue wasn’t bad.
To be honest tho it felt more like, she was sent to live with him to return to school in Japan...
It is indeed hard to change, and it’s only been six months so no doubt his dislike of her has softened more towards the like.
Tho I want to defend the youthful unawareness of the idiocy... “you better not have a girlfriend when I return” kind of should be a slap across the face or a knee to the groin in admitting she still wants him (if the vacay tour didn’t in itself)