My favorite thing about this movie is the fact that it's got barely any censorship. I have seen many works trying to imply different gay relationships in the plot without actually showing it even once, but this one's different. Everything, from illegal physical relationship to stupid homophobic comments, is depicted as it is.
Moreover, the characters' stories (and I want to specifically emphasize the MC's lover) are extremely accurate and sound like something totally happening somewhere in Japan (I live here so I know what I'm talking about). I actually find the movie a good piece of educational material on Japanese society and how LGBTQ+ fit in it.
The story is also very touching, you feel genuine satisfaction and peace after watching. The visuals are also quite above average. Not a masterpiece, but extremely enjoyable.