The space opera subgenre has found a lot of success in anime where these wild sci-fi ideas can truly let loose. Space opera series are those that traditionally tackle melodrama, warfare, and dense character studies, all set against the wide expanse of outer space. Space can be a popular setting in anime and there are series like Space Battleship Yamato, Irresponsible Captain Tylor, and Space Pirate Captain Harlock that highlight the genre’s versatility.
Source：https://www.cbr.com/anime-space-opera-short/
