Do you think Shin really lost his mind?

Since we all know that Maya has the Amaterasu Gate and it's heavily hinted, but not proven that it might be the reason why Shin wanted to stick to Maya so much, do you think he was just trying to save everyone else from himself by keeping everyone else (especially Mitsuomi since he loves the girl and would've taken her away if things didn't go the way they went) away from her? All I can say is that the closer and closer he got to his death, he became more and more protective of her. Shin saw himself being killed, but maybe he was trying to break himself from the Wheel of Fate before it was too late. Although Mitsuomi was the one who "killed" Shin, if Maya had the gate back then, everything that happened because she didn't intervene theoretically could have been avoided.

First off, this wheel of fate thing has been a little over-exaggerated by Oh great! :
1.Mitsuomi didn't Kill shin
2.Shin killed himself with his girlfriend's needle, when he pierced himself with it.
3.Shin nearly killed everybody that day(Mitsuomi included)
4.MItsuomi wasn't stronger than Shin, as Shin never opened his gate, He handicapped himself, but when he opened it, he beat up everybody that day.
----------------------------------------------------
So now the question is, if Mitsuomi didn't Shin, doesn't say that the manga's plot is a farce??? I mean the whole point of maya's revenge was that Mitsuomi
killed Shin, and the flashback clearly showed that Mitsuomi never killed Shin. Au contraire, it's Shin who nearly killed him(twice).
----------------------------------------------------------------------

Plus again another contradiction on Oh Great!'s part: If the holder of the Amaterasu gate appears every 2 thousand years, how the hell is Maya the Magatame shrine maiden???? it doesn't make sense, since it hasn't been that long since the first one. Or maybe Maya is not Aya and Shin's blood relative. Because think about it, she's the only one who doesnt have the Dragon Eye.

^ The whole thing with Shin was making a point. He wanted to prove to himself that he didn't need to use his special powers and prove himself to be a martial artist. From the last few chapters, a lot of the past chapter is starting to make a little more sense at least to me. When Shin fought Bunshichi, it seemed more like an actual fight more than the fight he had against Mitsuomi. Maybe it was because he actually used the Dragon Eyes during that fight with Tawara or because he hardly attacked during his fight with Mitsuomi.
I think everyone knows that Mitsuomi didn't kill Shin literally, Shin lost control of himself when Mana stood inbetween them and with no one strong enough in the school to stop him, he had no other choice but to stop himself. That's just my opinion.

Shin also lost against Bunshichi because he didn't have his dragon eye activated. He started beating him because he had the dragon eye but when his sword(Reiki) was taken away from him, he couldn't open the gate anymore. thus it gave bunshinchi an opening to defeat Shin as he didn't have his Ryugan activated anymore. At the time Shin couldn't activated the Ryugan without the Reiki. And no Shin didn't kill himself because he lost control, it seemed more like he was just tired of the whole "power" thing and what comes with it.

The whole thing with Shin can be confusing, but there is one thing clearly made back in the flashbacks.

1) Shin was actually afraid of his power and of losing control to it, and he wanted to have a precaution should the worst happen. That was why he stated that Mitsuomi would eventually succeed him one day. He wanted Mitsuomi, above anyone, to stop him should the Dragon's eye overwhelm him.
2) Shin was definitely attached to Maya, though whether if it were from their relationship as siblings, or from Maya's possessing the Amaterasu Gate we'll never know.
3) The point above is true, Shin at first could not activate the Dragon's eye without Reiki, that was why his father told Maya to keep it away from him and Aya when he first gave it to her. After the situation with Fu Chien however, he could activate it on his own, and so Reiki wasn't necessary anymore.
4) He was actually stronger than Mitsuomi during their fight, but he did handicap himself by struggling to resist using the Dragon's eye.
5) Shin killed himself, not Mitsuomi. Maya might have blamed him simply because she could not bare to put the blame on herself. Or she could dislike him because he seems to have gone on some sort of power trip since his confrontation with Shin. She does seem to accept, in some sense, some of the blame for Shin's death.

I did however, find Mitsuomi to be very hypocritical in his reason for wanting to fight Shin. I mean the whole reason why he confronted him was because he felt Shin was keeping him away from Maya. Yet he seemed to have no remorse whatsoever when he slept with Mana, knowing she was dating Shin. He only seemed to have any guilt after he saw the video clips of her and Shin that she gave him, and after he saw her crying after she confronted Maya.

That's why I don't really respect his character, he seems to take no responsibility for his actions and his words usually contradict himself.

Well on the subject of shin and his power, he states many times during the flashback that he is scared of losing himself to his power. Its right after mitsuomi overcomes his "fear" he meets up with shin and its basically implied that if shin ever loses it he wanted mitsuomi to stop him. As far as shin and reiki, im not sure where the impression that he cant activate his ryuugan(dragons eye) without reiki is implied because he activates it to get out of the constraints dougen put him in outside of the hospital, when he fights fu'chien(he was strong but there was no way he was going to beat him without the ryuugan), its also activated during the fight with bunshichi when he's lying on the ground and kuzonoha is holding reiki. I think you guys got confused by the awakening of shins power. When maya let him hold reiki his ryuugan activated because of the resonance effect with the sword, it wasnt neccessary for reiki to be in the user's hand in order to activate the ryuugan, this is proved by the many times aya has activated it without reiki. As far as the relationship with maya and shin he definitely had feelings for her beyond that of a brother. She said it herself when they were in the hospital after the bunshichi fight, that she realized a long time ago he "liked" her. They were close before shin even activated his power, knowing that maya possessed the amaterasu gate might have just given him more reason to stay by her side.

Its said that "mitsuomi killed shin" because he died during that fight. Despite whether he killed him or not this is how the characters of the story view this. If that fight didnt happen he might not have had to die. But you have to remember that shin went into the fight ready to be killed. He knew he walking into the jaws of death, the only reason he didnt let the fist he saw with the ryuugan kill him was because he didnt want to die alone, so he tried to take mitsuomi with him. (Can we really blame him for this, isnt it human nature to not want to die alone.) It was only after he lost himself for that brief instant and blasted kuzonoha away with the forged needle that his wish was granted because he now didnt have to die alone, i think it was some sort of penance he decided to take in order atone for killing kuzonoha.

You have some valid points, especially in that last sentence particularly. He did go into that fight with Mitsuomi ready to die, only he decided right when that fist struck him that he didn't want to die alone. Also I think he decided to take his own life by Mana's hand as penance for losing himself and killing her, yet it also could've been because he cared for her as well. After all they were very close and he had to have some idea of the feelings she had for him, being that he seemed to place high emphasis on her opinion of him when he told her the day he met with Dougen on that street that he hadn't killed anyone that day. I think Shin was caught in a crossroads, especially being that he was a knowing part of Dougen's plan and that his death was assured either way.

I definitely acknowledge shin for the most part. He was just a victim of fate, he lost himself to his power before he was "strong" enough to be able to control it himself. Even so, he still moved forward and tried to live his life as best as he could as blackangel says when he met up with dougen he lets kuzonoha know that even though he lost himself to the "power" he didnt kill anybody. Just a victim of ill circumstance, because even though they had the "blade" and the power to cut the chains of fate, they didnt have the "fist" the clears the path to its own future. (Oh Great's writing style is so dreamy) On the subject of the reiki, i cant be anymore anxious to see how much sexier she gets once she finally wields the unlocked reiki! (When reiki took aya back to the feudal era and told her that the time would come soon where they would be one i was never more proud to be a pervert.

and now to solve the actual question did he lose his mind now he was corrupted by the power when he used the ryuugan it was like a another being took over base animal instinct and when he stopped his mind reverted back to norm

As far as i remember it said that when he fought with Bunshichi, he wanted "reiki" to control himself - he wanted sword to not to kill Bunshichi.