The only disappointment with this ending really was that we never knew who exactly was Hatchin’s mother. Sure we also don’t know exactly what happened during Hiroshi’s bus accident, but we don’t need to: he clearly faked his own death in order to run away from the likes of Satoshi and the other gang members he got on bad terms with, but I’d love to have seen Hatchin’s mother, though that would probably be one of the countless women Hiroshi hung out with, only to dump afterwards after making her get the wing tattoo.