#ted chikatilo

Momomichi Ito

Gluttony - This one is pretty simple to identify! For one, Momomichi is the only killer here that ever is associated with 'consumption' of 'food' (even if it's friggin' blood) as apart of the reason he kills. Plus, it does track with gluttony essentially just being overindulgence in general. He wants to stay young and pretty forever, so he's essentially just 'eating' for vanity reasons instead of out of necessity.

Rei Shimizu

Lust - Also an easy one to pinpoint. The entire chapter she's in is about how the doctors at Ongo Hospital have severe kinks related to their field, and Rei is no exception - having a parasite kink that she takes way too far.

Eichiro Saiyama

Greed - Eichiro's only goal in life is to be praised for his work, something he has severely lacked throughout his entire life byond one moment. Hence why he becomes a serial killer in the first pace, in desperation to recieve more of it. It's an unconventional reading of greed, but I feel it works out.

Kenji Tsuruhashi

Wrath - Kenji's main motivation in Killer Killer stems from wanting payback against Juzo for abusing him during his tenure under the ex-Ultimate Boxer. It's to the point he's willing to kill a high-ranking official just to potentially cause an international incident where he frames Juzo for the murder. So, yeah, he fits into the wrath section pretty easily.

Ted Chikatilo

Pride - Ted's only, and I do mean only, motivation in life is basically his identity as being the Ultimate Pyrotechnician. He flaunts his talent off in flashy murders and revels in making a spectacle of things with pure confidence & showmanship. Likewise, he takes offense at people insulting his claim to fame. As such, he fits nicely into the pride section.

Mimiko Tomizawa

Envy - The reason she kills her target in a blatantly historical fashion? Simple, she was that jealous of him cozying up to her 'Master' and wanted to give a lesson to anyone else that might try to do the same thing. Pretty much envy at its most blatant.

Mukuro Ikusaba Cult

Sloth - Takumi's entire disdain for the Mukuro cult, is the fact they all they do is essentially act as 'cheap fakes' to Mukuro. No real passion lies in their murders and all revel in essentially trying, and failing, to be like the real Mukuro instead of themselves. Hence them being the perfect contenders for sloth.

...

Of course, that just leaves Shuji!!!

How the heck does he fit into this?

As for him, I think he sort of supposed to embody all?

Lust - He's pretty blatantly shown as in love with Takumi, to a very obsessive degree.

Greed - He wants Takumi to be with him, even at the cost of Takumi giving up being Killer Killer/dying.

Gluttony - Metaphorically speaking, his indulgences in murder go from wanting to just 'consume'/kill criminals to wanting to murder humanity itself due to people's potential to murder.

Sloth - He comes up with elaborate plans to indirectly get Takumi to quit being Killer Killer instead of bothering to do by any direct means, at first.

Wrath - He's a Killer Killer, and a serial killer in general, but beyond that, he's willing to enact brutal violence against those he hates, be it horrific murder or assault.

Envy - He clearly does not like Misaki being in the picture with Takumi and is content to hurt/kill her in order to get Takumi to be with him.

Pride - He thinks absolutely highly of himself as the one to decide whether humanity/people in general should die, and has a tendency to think lowly of them.

❤ He'll run his fingers up and down your arm, feeling your skin and the bone of your elbow. Whenever you're on your computer he'll sit himself next to you and do this until you give him attention. Other than that, he'll be too busy in his own mind constructing more devices to think about bothering you.

❤ Your approval over his fireworks is very important to him. He throws all of his ideas his ways whenever he's in a good mood. If you give him crayons, he'll draw out the entire plan.

❤ Remember to not critique him if the idea doesn't sound good. He'll become enraged and talk about how you don't know a thing about fireworks and what's good or bad.

❤ You and him live away together from the big city. A house in the mountains is perfect for you. If you want a pet, he'll allow it as long as it doesn't annoy him. (If you get a bird... he's gonna talk to it more than he talks to you).

❤ There are days where he doesn't come home at all. It's very strange - and very worrying at first. But it's just something you have to get used to.

❤ When you first got together, you had already memorized the sound of his laughter. It's joyous and filled with pride. Making him laugh is one of the best things about the relationship. And when he sees that he made you laugh, there's a certain sparkle in his eye that you adore so much.

❤ He's hard to sleep in the same bed with. He moves a lot when he sleeps. It especially wakes you up in the middle of the night. Sometimes he quite literally snatches you awake - whether he realizes or not.