So like, one thing I've been thinking about for a while is the whole situation with them meeting at his mother's funeral. It seems like she remembers him from then whereas he only has vague recollections (otherwise it feels like they would've talked about it openly before this). So I feel like the plan is to have this be some kind of climactic reveal at some point. But, it's such a lame reveal. For one thing, we already know about it beforehand so it won't be surprising for us as readers. And secondly, it's not like they're secret childhood friends or that he saved her life or something, he literally just met her one time and gave her a flower. Like big whoopie doo.
Also, foreclosing his house feels like a super weak attack, like a problem that can be resolved super easily, especially since Aoi's grandfather approves of him.