This was cute, but I feel like I've read something very similar on this site before. I'm always a sucker for childhood friends to lovers trope and this had it plus an age gap. The art is good, kinda fluffy shojo type which went great with this super sweet story. This girl was so gung-ho about this guy that I feel that he couldn't help but fall in love with her.
The story is cute and I really like it, but I share the sentiment with a few other reviewers--it's a little flat. I think it may have to do with how weak the true confrontation was, which may have been a result of the lack on internal conflict we saw from the male lead.
The art was good. I love this situation : older male character, cute young female character, and marriage. Hahaha. Something is a bit off though, maybe the storyline is a little flat. But overall it is OK.