The movie is not without problems (as I will elaborate bellow), but it has many qualities which make it superior to other 2000's lgbt-themed Japanese movies, and even some of the more recent ones.

Story - the films deals with several issues within both the queer and heteronormative communities in modern Japanese society, such as parenthood, familial relations in general, balancing one's personal life & career, coming out and more. However, I think some of the subplots should have been cut, as the final result is both long (more than 2 hours) and somewhat incoherent at times. The roles of certain side characters (such as Naoya's mother) could have been easily transferred to other characters, too.

Acting - Nothing bad to say here. Katsuhiro and Naoya were much more believable as a couple than most of the Japanese BL couples we have seen recently. The actress who played Asako did a wonderful job too.

Would probably watch it again, even just in order to try and spot details I missed at first.