So I started reading this and was really into the story for the first 40 chapters or so. Then... I don't really know what happened. Maybe I was just getting tired of the pace of the story. Maybe I just wasn't that invested in the characters. Heck maybe I just got tired of the cliches and misunderstandings that seemed to pile up. Whatever it was, I really couldn't stand reading another 100 or so chapters and so I just started skimming over page after page until I reached the end. For what it's worth the title of the story is at least accurate, the ending is indeed a happy one even if it does come across as a bit rushed.
One big issue I had is the same problem I have with many manga around this length, it just felt like the story should have been half as long. While a lot of the drama was actually compelling for the most part, cutting the story in half would have really helped to focus things and make the story feel like less of a slog to get through. I mean I can only hear about Utsumi complain so many times about his love problems that WE ARE ALREADY AWARE OF before I just want to slap the hell out of him.
The characters are a mixed bag. For example while I find Utsumi to be a little TOO spineless at times (especially for a guy who has women hanging all over him) I don't find him to be unrealistic, and he's surprisingly easy to root for. Yuki is also a smart and interesting character (when she's not acting dumb near the end...) and the two make a pretty cute couple when they're actually together. However some of the side characters like Rise, I don't even know why she's in the story. Sure Rise adds in a little bit of romantic tension, but Shou already fills that role and it's not like Utsumi even considers dating Rise for longer than a minute. It's like the mangaka had a good idea for a character design (because I like the way Rise looks to be honest) but didn't exactly know what to do with her other than halfheartedly making her another rival for Utsumi's love.
I'll admit, this manga does have a quality that made me want to keep reading and made it hard to put down at first. After a time though the story is content to just be as mediocre as possible, making up misunderstanding after misunderstanding and making you wish they'd just have sex and get it over with already. Frankly, I recommend reading the oneshot that came before the story proper instead of this because it's 150x shorter and I think is ultimately more satisfying.