I can't keep reading this, it's wholesome?? I guess which is why I picked this up. But like the dude is beyond pathetic and is down right creepy in some ways (he's not trying to be ik). The girl also acts quite immature imo and doesn't seem ready for this kind of relationship.
Also the people around him are also abit odd could be cultural differences but I wouldn't want to see a grown man marry a highschooler like that. But he waited for her to be of age(??).
It might be too early to tell but with these kinds of mangas progress is usually slow and if this is the current state the guy is at then this is just not for me.