* CompleteMonster: [[MorallyAmbiguousDoctorate Dr. Tomohiko Katsuragi]] is the Saiki clan's doctor and one of Souma's lovers. He [[BitchInSheepsClothing initially appears]] to be a polite, helpful doctor, but is soon revealed to be a disgusting [[WouldHurtAChild pedophilic]] rapist and SerialKiller. When Souma informs him that his stepmother Sakurako was sexually abusing him, Katsuragi drugs Sakurako and forces the traumatized young Souma to slit her wrists and kill her, not to stop the boy's suffering but so [[{{Yandere}} he could have Souma for himself]], with the side-effect of ''shattering'' the mind of the younger Sakurako and making her go from a CheerfulChild to a CreepyChild. He regularly rapes and tortures Souma for years, before doing the same to Souma's lover Masataka, out of jealousy. He gives [[DomesticAbuser his wife Asayo the same treatment]], turning her into a battered BrokenBird. He later tries to poison Souma's ill father Lord Saki as well, one of the few people still remaining to him. Out of the many horrible people in this story, he's definitely the worst.
* DarknessInducedAudienceApathy: Christ on a bike. Out of the main characters only one (Masataka) is unambiguously good, and he gets horribly raped and broken through the story. [[spoiler: And while Masataka manages to walk out and away to start rebuilding his life, the other protagonist (Souma) is all but stated to have died.]]
* DracoInLeatherPants: Yes, Souma has a heartbreaking and terrible past. Yes, he's no CompleteMonster. But he ''did'' mentally and sexually abuse the first person that gave him real affection in a long time, ''and no DarkAndTroubledPast justifies or handwaves that''. Even Souma himself deeply regrets what he did to Masataka when he realizes how much he broke him!
* HoYay: In addition to the obvious {{Yaoi}} relationships, there's a lot of hints that some side characters are attracted to Souma.
** Considering that it's ''[[ReallyGetsAround Souma]]'', odds are they've slept with him already.
* JerkassWoobie: Souma and Sakurako. Both have heartbreaking pasts and big reasons to be the way they are, but it's NOT a justification for the shit they pull on others.
* MagnificentBastard: Souma has traces of this, specially when [[spoiler: he brilliantly and spectacularly punishes Katsuragi.]]
* TheWoobie: Poor Masataka. And Asayo, Katsuragi's wife. And the young maid that [[spoiler: was Souma's mistress and got pregnant with his baby, then was tortured by Sakurako, lost her baby and ended up horribly broken.]]