This manga is really great in my opinion! The romance qualities are definitely in there and they do seem quite realistic in terms of how relationships are like, of course ignoring the fact that in the beginning the mc and fmc both coincedentally enjoy the same things. But that doesn't make the manga worse in any case in my opinion. I hope the mangaka keeps up the good work and expands upon their close relationship and doesn't rush things or create a horrid ending that quite a few romcom/romance animes have (Love is war rushed ending!!). Anyway, the manga is a nice 9/10 in my opinion as its slower paced, good slice of life with relatability and has good characters, the only flaw I kind of see with it right now is the lack of side characters though, there's not a lot and they dont really impact the story much (other than yuu, the 2 girls who snaked on umi and maki's parents). Anime adaptation though has really good pacing and is a banger!