* CrowningMomentOfAwesome: Quite a few.
** Ryo crushing Sugarawas fist with his skull.
** Ryo after his fight with Black monkey where you see him in one scene after he completed his ki training.
** Ryo defeating the Thai boxer.
* DarknessInducedAudienceApathy: Quite prevelant among readers.
* DesignatedHero: If by hero, you mean Lord Byron or the old Roman definition, sure.
* EvilIsCool
* EvilIsSexy: Ryo does work as a ''gigolo'' throughout the series and gets paid very well.
* MoralEventHorizon: The titular character crosses this when he rapes his foils girl friend completly unprovoked and then makes him listen in on it.
* NightmareFuel: Ryo tries to cremate [[spoiler: Rangah]] on a funeral pyre after the latter apparently dies from injuries. Turns out he wasn't quite so dead.
* UnintentionallyUnsympathetic: Ryo is supposed to represent how far society can push an individual, but honestly, he is a nasty piece of work who comes off as being closer to a VillainProtagonist than a ByronicHero.
* {{Woobie}}: A very dark type
** Actually when you think about it he is almost every type of woobie on the list. Including JerkAssWoobie, IronWoobie, WoobieDestroyerOfWorlds and StoicWoobie (not to say he is stoic in the least however he never ever complains about his life he simply rages against it and just to complete the list his manager and sister are {{Wheelchair Woobie}}s. Now that's a lot of woobie.