Ken, Rei, and Mamiya arrive at Boss Fang's lair, only to find out that the gang has tracked down and captured Airi, Rei's long-lost sister.
Genres: Action & Adventure , Animation , Drama , Sci-Fi & Fantasy
Keywords: anime , based-on-manga , dystopia , fighting , martial-arts , post-apocalyptic-future , shounen , watch-anime-series-online , tv-shows-online , assertive , compassionate , intense , macabre , melancholy