I actually own this manga! I bought it in 2010.
So I feel like I liked it way better this time re-reading it? Like, it's a pretty generic storyline (lovewise) but I really liked how realistic the characters felt. It wasn't too much of a cliche and it just felt refreshing to read, plus the artwork had me feeling all types of great nostalgic feels! The smut was nicely drawn too! Solid 3.5 for me. Naoki is such a mood too LOL