Characters: Wolf Guy Wolfen Crest aka: Wolf Guy-Wolfen Crest
Akira Inugami
The main character and one of the last remaining werewolves, Inugami has drifted through life on tides of misfortune, carrying a disdain for humanity and an uncanny ability to avoid death. He strikes up a bond with his new homeroom teacher, the kind and beautiful Ms. Aoshika, despite himself and what he's gone through. So, Inugami goes through the story facing characters that seem to lose themselves by his sheer presence, and trying to make sure that his bad luck doesn't rub off on on Ms. Aoishika.
Tropes that apply to Inugami:
Animal Motifs - Wolves. Yes, even when he's not on all fours.
Back from the Dead: While all his family and friends think Inugami died after killing Haguro, in truth he was taken to a lab, Phoenix Organ seems to have kidnapped to perform experiments.
The Hero Dies: Inugami dies after doing the impossible to kill Haguro, Aoshika mourns in despair, and his aunt keeps her company while she gets to know more about his life; still if this is going to stick is another story...
True to some cases of this trope, it didn't stick, as soon as Aoshika knew all about Inugami's past and found a new resolve to recover, Inugami is seen at a lab, being healed and being a subject of research.
Hot For Teacher: The only (living) person he shows affection to is Aoshika-sensei. Guess what happens soon...
Ineffectual Loner: He is also Alone in a Crowd and really just wants to be accepted, but doesn't know how to handle all the calamity that befalls all those around him.
Last of His Kind: Subverted. He thinks he is, but it's revealed that Akira Jin is also a werewolf.
Locked into Strangeness: by pulling Heroic Second Wind one after another, Inugami's hair turned white, his werewolf form also became white, it simbolizes that he was taking energy from his own life to protect Aoshika and defeat Haguro.
A troubled middle school teacher, who is saved by Inugami from a gang of thugs. She's somewhat nosey, more interested in proving herself right that Akira Inugami is a werewolf and less in that she's dealing with a werewolf, but is otherwise genuinely worried for her student's mental wellbeing. Concern turns into more complicated things, especially when their student-teacher relationship warps and she falls within range of Inugami's magnetism for mayhem.
Broken Bird: Seems to have rape in her Back Story. She gets even more broken later on, specially when Hagurou decides to use her as bait for Inugami... as well as having her gangraped. Repeatedly.
Christmas Cake: Although she was married once, but got divorced recently. She lampshades it in her drunken rambles before she meets Inugami.
Gag Boobs: Ms. Aoshika's so well-endowed it's almost silly.
Happily Failed Suicide: Aoshika tries to jump off the hospital's terrace when she hears about Inugami being dead; she is stopped by a wolf who resembled Inugami, and she realizes that he could be alive somewhere and that she has to live in his place and honor; in truth the wolf was Jin, Aoshika discovers this by herself and talks to Jin in Alaska about it, thanks to this she now can recognize each wolf individually and finds a new respect for them, that's where she decides to live in Alaska.
Fan Disservice: Seeing her in her lacy undies should be a reason to squee. Not when she's chained to a wall, and about to be brutally gangraped by Haguro AND his goons.
Plucky Girl: After her rescue, and despite all of the horrific things that she has been through, Aoshika picks herself up and presses on. Wow.
Yank the Dog's Chain: Great, Aoshika is saved, but at the moment Inugami is taken for dead; which made Aoshika sink deeper than when she was getting gang raped, she is not eating anything at the hospital, she can't take Inugami off her mind, and now her body shows signs of malnutrition.
Throw the Dog a Bone: Aoshika finally seems to experience a true recovery this time, after getting to know about Inugami's past, she decides to live in Alaska, at a preservation site, where Inugami was raised by wolves. The wolves accept her presence and starts to know them better, her body is looking healthy and she is smiling again, also she seems to know wolves so much now that when Inugami woke up at the Phoenix Organ lab, Aoshika immediately noticed something.
Younger than They Look: The poor woman has visibly aged quite a bit by the end of the series.
The scariest ninth grader you'll ever meet. Son of a Yakuza, who develops a... fixation on Inugami sparked by their being near total opposites. Where Inugami is a deliberately passive physical monster that gains a Morality Pet, Haguro is a destructive human being that abuses those closest to him. As the story progresses, this contrast becomes more stark and he grows the more monstrous of the two. Which is his whole intention: to be a true monster. A werewolf around just means he'll have to kick it up a notch. Or twelve.
Animal Motifs - A hawk. Special mention goes to his eyes, which are black where they should be white.
Attention Whore: His motives are best summed up as "How the hell can I get that werewolf to look my way?!" And he persists in this behavior even when his resources would be better spent doing ANYTHING else.
The Dreaded: Students have a massive Oh Crap moment when they hear he is coming back to school.
Evil Cannot Comprehend Good: Subverted in one case. Haguro quickly figures out Inugami has at least one altruistic bone in his body and goes after Aoshika. Played straight in that he wants to be Inugami's Worthy Opponent but doesn't understand what would make Inugami think such a thing about someone.
Expy: Looks a bit like a younger and more emotionless version of Yujiro Hanma.
Younger than They Look: He's roughly two meters tall and looks like he's in his late twenties. Lampshaded by Inugami in chapter 11.
Ryuuko Kounuma
Haguro's very beautiful, but also EXTREMELY messed-up girlfriend. Her interests include destruction, sadism, brutality, and having sex with the man that can deliver the most of all three, so long as it's not in her direction.
Ax Crazy: Whatever your definiton of "crazy bitch", she's proabably not far off. If she is, you're trying too hard.
Broken Bird: See what repeated rapes from her dad and a pimp and living in a Crapsack World can do to a teenage girl: leave her broken and BATSHIT.
Death by Sex: Save for Haguro, the men who sleep with her are all dead. Including her rapist dad and the pimp. After Haguro's death, Ryuuko goes into a kill frenzy, she stabs to death two men who were having her "services".
Eye Scream: Haguro punches her in the eye at one point.
Fan Disservice: And holy shit, HOW. She's very attractive and knows it, but she's so deranged that NO amounts of nudity from her can count as sexy...
My Girl Is a Slut: Not that Dou had any actual feelings for Ryuuko, but he didn't seem to have a problem with her seducing other men and actually encouraged her to seduce Inugami.
Too Spicy for Yog Sothoth: Possibly. Inugami getting back up from what should have been a fatal stab wound causes her to flee in terror after giving him the address of where Haguro is keeping Aoshika.
Uncanny Valley Girl: Has this as part of her character. Only her boyfriend is scarier. By Magnitudes.
Villainous Breakdown: Post Haguro's death, Ryuuko just lost her mind, wandering on the streets and selling her body in utter disbelief now that she lost Haguro and couldn't get Inugami.
Badass Normal: A skilled and dedicated boxer, but not in the same league with Haguro.
Bare Fisted Monk: Which is why Inugami refuses to fight him. It would cheapen Chiba's skills.
Came Back Wrong: Inugami gives him some of his blood, which turns him into an ogre.
Hard Work Hardly Works: This is the only thing (besidesHaguroobviously) that kept him and Inugami from being friends: the fact that Chiba could train forever and NEVER be as strong as Inugami and Haguro.
Ho Yay: Haguro thinks he has this with Inugami, so he beats him half to death and rapes him.
Chronic Hero Syndrome: Jin explains to Aoshika that werewolves can sense a human's sadness or call of help, while no other human can; and in some cases the good ones feel obligated to help the human, or at least try to ease their pain a bit. That's what Jin does for Aoshika, helping Inugami to rescue her and later pretending to be Inugami in wolf form to give Aoshika the hope that he might still be alive.