I agree more with the most liked review. But I want to add something from myself. It is a pity that Given, which was the best BL falls into the typical BL tropes.
Many manga pieces were cut from the movie. The atmosphere is quite bland, the dramatic moments look lackluster, Mafuyu's song is great as always, and the relationship between Akihiko and Haruki is ... typical ... And I don't think I need to tell you what it is.

Akihiko is a bastard. Why? Because, in the first place, he sexually assaults Haruki by attacking him on the couch. The scene is not as bad as in the manga, because in the manga it was much more rapey ... I don't need to say what. Terrible isn't it?

But you will tell me. ''But Given doesn't use it like other BLs''. Sorry, but we're in a romantic movie, not in a documentary crime movie. There are a thousand other ways to show a dramatic moment, but using a proven thread is easier. You know what? This situation is swept under the rug. Seriously. Even despite the fact that it's not shown in some romantic light. No, it's not. So even in some of the "problematic BLs", it will not be discussed later. What next ... The film is supposed to show Akihiko's development as a character. Only that Akihiko has the nerve to use Haruki after he attacked Haruki. For example by staying in his apartment for a while. So for a deeper look, Akihiko has a hard time with Ugetsu. Because he can be said to be abusive towards Akihiko. Total drama in a relationship. And his boyfriend is supposed to be presented in a thin light here. Akihiko's spoiler will leave him and he will be with Haruki. Why should Haruki be about their relationship drama? Haruki, he's not mad. He is a good, slightly naive person who is ready to help. I have nothing against him. Akihiko helps Haruki soon, helps a lot. Gives him advice related to music. But sorry, I can't take Akihiko in a second light. He hurt and used Haruki. You could say that everyone makes mistakes. Sexual assault/harassment is not a mistake, it is a cr.... okay, I will not mention it anymore. You can see Aki regrets what he did, and it's true. Maybe it works in an imaginary world, but it doesn't work in the real world. I have nothing against this couple, but what is happening here is absolutely unrealistic. I'm not saying that all of Given is bad. Absolutely. The original series is great. And he showed that BL can be realistic. Can tell a realistic, interesting, non-toxic story, with characters that resemble people, not sexual fantasies about gays. But this movie isn't very bad, it's just not very realistic, and it has some not very bad plots. Compared to other shounen-ai, of course, it keeps the level a bit above average, but it doesn't deserve SUCH a high rating, which just pisses me off. In addition, what is the chance that a toxic person is actually changing? What is the chance he won't attack you anymore?