MC and ML are both serial killers... MC is actually the bigger psychopath since he sees his kills as a work of art while ML... more>> has more of a revenge tilt to his mu*ders. <<less

Title and cover say a lot - MC was a genuine yandere who blackmailed, beat, r*ped, and locked up his lover until the day of... more>> his death. After committing su*cide, MC wakes up in his victim’s body and starts to realize how crazy he was from his lover’s perspective <<less

MC is a normal college student for approximately 2 chapters, but slowly starts to lose his marbles after the yandere ML pressures him into becoming... more>> a mu*derer <<less

When thriller novelist MC finds out his husband has been cheating, he turns mu*der mystery plot into reality, weaving an intricate plot to exact revenge... more>> on his scum husband and paramour <<less

This is straight up p*rn, but the hermaphrodite MC’s descent into depravity is surprisingly drawn out and fascinating. A school teacher, husband, and father, the... more>> MC originally feels guilty getting f*cked by his father in law, but his remorse disappears as his desires grow - he becomes manipulative and sociopathic, seeking increasingly outrageous s*xual encounters <<less

MC, a psychopathic, mu*derous demon general from Hell, infiltrates and tries to destroy the human world. Honestly MC gets bonus points just for being an... more>> actual evil mastermind who follows through <<less

The fluffy version of Killing Stalking. The MC and ML are both parody levels of insane, but they aside from that, they're very emotionally mature... more>> - they "self reflect and communicate" to make their relationship work. Even comes with a happy ending! <<less

While the current MC totally mellows out, his past self was a savage emperor who practiced ruthless, demonic techniques to slaughter his relatives and conquer... more>> the world and essentially hate f*cked ML to death <<less

Hyper competent mad scientist MC is shoved into a quick transmigration system by yandere ML. MC doesn’t disappoint and is already planning a mu*der by... more>> chapter 3 <<less

MC is landed himself in jail for manslaughter after presumably killing his love rival. Ten years in prison only made his love for the ML (his adoptive brother) more obsessive - he sniffs ML's used handkerchiefs, stalks ML, has no sense of boundaries, and never gives up no matter how much the ML refuses and abuses him. Aside from this though he's actually a fairly ordinary and kind person? He's like a normal person addicted to the ML, in a way that's compared in-story to an alcohol addiction. I'd say his insanity is heightened since the all crimes have realistic consequences in this story... more>>

Now the ML is a bit of a mystery but he's hiding quite the dark and maybe even jealous side too. A very joyous pairing! <<less

MC is an amnesiac omega with a burning hatred for alphas, whom he has ruthlessly mu*dered in the past. ABO zombie apocalypse verse, so understandably,... more>> everyone’s a little bonkers <<less

MC and ML are participants in a mu*derous reality TV show of the dystopian future. MC is certainly mentally unstable, but his crimes pale in... more>> comparison to the wildly f*cked up society he lives in <<less

The MC is like a dragon obsessed with hoarding things - money, points, gifts from the ML, other people’s souls... he’s not quite as evil... more>> as the tags and synopsis would suggest, especially in the survival game context. He has a bottom line, valuing friendship over money, and hasn’t killed innocents. He still got a few screws loose though : ) <<less

MC has a mu*derous split personality, who is also his boyfriend. Our MC is absolutely infatuated and enters a death game to try to gain... more>> a body for his lover <<less

MC is a serial killer who kills serial killers and ML is the FBI agent who’s trying to track him down. MC seems more antihero... more>> than psycho but he has his crazy moments <<less

MC is a crime lord and buys the ML from a brothel to keep as a pet. Bonnie and Clyde vibes

MC is tasked with conquering a harem of demon lords, each crazier than the next. However, as the author who created those psychos, our MC... more>> is naturally the biggest psycho of them all, and acts like a white lotus to emotionally torture his conquests until they can’t live without him <<less

Gong MC loves to manipulate and abuse the former playboy ML. Both are selfish and have irredeemably rotten personalities. College setting

Uh in terms of craziness the yandere ML takes the cake here, but MC is lots of fun too. He's a human with ghost powers,... more>> kind of unstable and terrifying, and sometimes he shows signs of losing control of his hunger/"crossing to the other side". He also has PTSD from living in a horror survival game for 12 yrs. MC isn't actually evil at all, but he does a damn good job of playing evil to scare the sh*t out of ghosts and humans alike <<less

Uh “He was diagnosed with photophobia,6 claustrophobia,7 and schizophrenia.8 He also had a split personality— an anti-social personality and highly aggressive.”... more>>

To be fair, the MC hasn’t displayed any of these traits in the first ten chapters but hey we have something to look forward to. And omg octopus boi is so cute, I wanna hug him╰(*´︶`*)╯btw yea he’s a little crazy too <<less

Poor MC gets gaslight, gatekept, girl bossed till he loses his fcking mind, rinse and repeat lol

Mc went off the rails and committed su*cide in his previous life, I like how the author kind of pulls a fast one on us,... more>> making us think he's moved on.... but old habits die hard lol. ML is also quite insane, their love language is basically cutting themselves, stabbing, and killing ... but they do get better (in case ur not into that) <<less