Imbalance

Kaname gives Zero his blood after assuring himself that Zero cannot consume the blood tablets.
Basically, Kaname is the callous asshole we all know and love, but he's hot and he has feelings, too. Possessive, inhuman feelings. Also, Ichiru is there. Art=B

A flowershop boy is the reincarnation of a vampire's lover. A librarian sees something he shouldn't have. A trio of siblings are vampires, and at least two of them are shown to lack any real moral code.
The second story in particular is pretty messed up, but both of the main ones get pretty uncomfortable at times. Art=B-

Chpt 7 Review: Salary man looking for a ring for his would be fiance is offered one by a sexy, but fairly sketchy guy, who turns out to be a dragon who thinks said man would be better off with him. Maybe he's a dragon, maybe he's a dragon emperor, there was something supernatural going on. Also possibly mind control. Some of the Seme/uke dynamic is a bit on the nose, but on the whole this gives you the tingle that you crave. Warning for jewelry being used in ways not intended. Art=C+

Chpt 4 Review: A salary man unexpectedly comes across his jealous, abusive ex-boyfriend, now a host a a club, who proceeds to ruin his current relationship.
This may come as a surprise to you, but they end up getting back together. But in less of a specifically "typical yaoi" way, and more of a "that's kinda what an abuse victim does when they feel the have no power, but this is still yaoi typical enough that you don't feel too uncomfortable" kinda way. Art=B-

Specifically Reviewing Chpt 1.
Ishida Takafumi is kidnapped one day on his way home from university and finds himself being trained by a yakuza boss.
He finds out that he was in fact sold to this stranger by his family, and decides to accept his lot in life, since he hardly has a place to go back to. At least he has someone who values him. Art=C

A boy is a toy to another boy, who may feel actually emotions for him, but in the end is a selfish, greedy, sociopathic rich boy who threatened the other's entire family with poverty, and totally would have done it, too.
Ugh, what unrelenting angst. Like, its cute looking and a little hot, but there's no real relief, even in yaoi typical stockholm syndrome. This uke is not happy or satisfied with his position, but is ultimately stuck. Art=B

Kakashi and Iruka are in an abusive relationship, Kakashi's possessiveness being the main problem, but not the only one.
They break up in the beginning of the dj, but while life goes on, it doesn't necessary get better. Neither of them is really over the relationship. Anyway, they are ninja, so niether of them, Kakashi especially, were very emotionally stable to begin with.
TW: Murder, Suicide, Physical Abuse in an established relationship. Art=C+