User blog comment:DeltaHorizon020/Fourth Effortpost of A Complete Monster Candidate/@comment-2175012-20170611051319/@comment-27960787-20170611062317

Alright. Let's list Yuto's crimes that is important for him:

1.He puts the Hiinatsuki Kids on the And I must Scream situation that ends up Rokuro getting a Heroic BSOD/Rokuro giving up in the exorcist art due to most of them corrupted to become impurities that forced Rokuro to killed them. Sure, There's Chijiwa who puts an another And I Must Scream crime by turning most of the school kids into puppets. But here's the thing: Chijiwa is motivated by his dead brother while Yuto was motivated For The Evulz and shows a sadistic glee after doing that thing.

2.He delivers The Reason You Suck Speech to Benio which made her cry in tears. Given that Benio was motivated by her Yuto, her brother, to become the strongest exorcist but Yuto crush that hope. Not only that, His caring towards Benio is just a mere facade to hide his true colors that he hates her. And he actually performs a sadistic glee when torturing Benio like threatening to destroy her leg and arms after he broke her legs and just going to left her to die by the Impurities

3.While he did got used by Kuranashi a little bit, He actually has no problem when Kuranashi absorb his spell powers since he just going to turn the table due to the powers that Kuranashi stole from the 12 Guardians anyway. It could also be implied that Yuto also works for Kuranashi for fulfilling his (Kuranashi) plan to combine Magano but at the end of the day it still failed due to Yuto just going to turn tables around him

4.Break the spirit of Rokuro so that he could transform into a being called Cataclysm King that will eradicate all humanity like trapping Benio in the barrier and tortures her,threatens to destroy the world that Rokuro protected if he (Rokuro) didn't fight Yuto himself. This was after he got recovered in Ame no Mihashira tree but even then, he had been done before in Episode 19 that Yuto also told Rokuro that he will consume all the spell powers of all humans by killing them so that he could become the strongest Exorcist in the world.

5.Attempt to corrupt others into impurities just to make Rokuro's spirit broken like in Episode 16 in that what he did to Mayura and will try to do the same.

6.Same as number 4 and like I said, He will led the world into it's destruction just to prove his existence by battling Rokuro in his final battle. And he doesn't have a problem with it at all.

Also, Let's touch his Freudian Excuse/Redeeming Qualities too:

1.Yes, The origins of him is that the Yang energy from Ame no Mihashira tree got delivered to Benio's unborn self. But Abe no Seimei's plan went out of focus given that Benio has a twin brother that could rival Rokuro's Yin. And Abe no Seimei/Mikage felt that Yuto's existence felt unecessary. This doesn't holds up since Arima said that Yuto haven't learn the fact yet even if Yuto got recovered in Ame no Mihashira tree and he seems to be happy to be an imitation of a Yin that will bring forth the destruction to mankind.

2.He used to found Benio an annoying sister,His friends also annoying,Seigen an annoying teacher and his parents are blinded by the ideals. This also doesn't hold up since Yuto himself put a facade towards them and the things that he had done like the Hiinatsuki tragedy since we never see Yuto interact with his parents and most of the kids that Yuto found annoying are innocent.

3.His "love" for Rokuro doesn't sound mitigating at all. Yes, He claims that he loves Rokuro but his love is just a mere twisted obsession towards Rokuro since when he met Rokuro first time......Rokuro is the epitome of the people that Yuto hates the most but he became fascinated by him since Yuto felt that he met his other self and get obsessed about it afterwards. He also had no qualms to beat Rokuro and will throw him when he's not useful anymore to him (Evidenced in Episode 19).

So there's the important part for Yuto