I mean, it seems reasonable that someone clingy like this would make a great best friend but be really obnoxious when you get a significant other. It's neither a good trait nor a bad trait, it just is what it is.
While Hara might have been a little annoying, I still feel that he is a really good friend who cares a lot for Hana, asking Hiyori to take care of Hana🥰
To be honest, I thought at first I'd hate the new guy, but him fighting with her is just what this series needed. A little bit of conflict to offset the diabetes. Very nice
I see Haracchi catching feelings for Hiyori later on and it’s already got me angry just thinking about it. Hopefully it doesn’t happen but I’m confident it will