Ginga Teikoku no Metsubou Gaiden: Aoki Ookami-tachi no Densetsu

Such a pity that Legend of Blue Wolves was never finished because of the low budget, but this one ova that was produced has a really good story. There are not too many good yaoi [when I say good yaoi I'm thinking at story too, not only the sex parts ]. 

They are literally the same movie. I kid, but I think the character dynamics in Legend of the Blue Wolves are heavily inspired by Char’s Counterattack.  

Both titles involve "wolves" in a sci-fi setting and feature a large group of powerful males that deepen their relationships and discover their shared fates over the course of anime. They are both highly philosophical works meant to make the viewers think, albeit in different ways. However, note that the Legend of the Blue Wolves remains unfinished, has lower animation quality, and might have more graphic depictions of the main characters' relationships.