I read the novel a few months back right after I read this manga.
Somewhat a spoiler below (most of it are me ranting) so beware!!
There's like 3 major arc on the novel; 1st, it's about the whole cross dressing thing and they part ways.
2nd, it's how they coincidentally meet up again after sometime has passed (if I'm not mistaken around half a year) and how they made up but are not in a relationship (with a few breakups and some drama). 'Why?' you may ask cause someone's an asshole for confessing that they "felt something" but isn't sure if its a romantic feeling or not and then had the fucking audacity to ask to wait for them（╯°□°）╯︵( .o.). I forgot to mention that the uke's personality changed so much that it's kinda hard to believe he was the same person from the 1st arc... ugh my heart breaks just remembering about it.
3rd, well guess what MORE heartbreaks! Wanna know why, cause that someone said "I am just more comfortable with us being friends and I can't see you further than that... oh, and that person was dealing with some personal crises so... but still FUCCCCKKKK!! In this arc, the uke is just so pitiful that I cried for him a few times ( TДT). But, they did end up together for sure this time uuugghhhhhhh (sorry but I just don't like the seme). Not to mention uke's personality changed a lot here too.
There's also a few chapters of side stories and that's pretty much it.
Now for my rants...
For fuck sake I fucking despise the motherfucking seme! Like, BITCH I know that he too got hurt and was fucking davestated, you might even say he was technically betrayed. BUT, what about the uke he too was heartbroken and he knows it's his fault for deciving the seme. However, that's not an excuse for the fucking seme to go around (like the shit he is) breaking the uke's hope and feelings not once but twice! Ultimately the seme did gave the uke a hope/chance of being together (he fucking promised too) so because of that the uke tried his best to endure his feelings and urges as to not make the seme feel uncomfortable or turn off by him (cause shit is still off put that uke is male and still hung up on his feelings for 'youko', cause she was everything that he dreamed of/ she's his the ideal girl (¬_¬)).
Besides that, how 180° the uke's personality changed also bothered me. I mean, at first he was the outgoing, confident, kind and cheerful person but at the end he had this major insecurities, he's so afraid of every little thing that he do would make the seme hate him and I don't know how to express this in words but I'll describe it as an abandoned kitten under the rain, he's so pitiful and sad that I feel my chest suffocating. All in all, I just don't ship them and the uke deserves someone better but what can I do when that's their story... I could only rant my dissatisfications.
Utsukushii Koto (INUI Nao)