So, new chapter. This isn't pre-written so I'm making it up as I go, although there is a kind-of plan in my head. Updates will be... Unpredictable. Sorry.

Oh and thank you to Dean's Worshiper for the encouragement, i hope you like this chapter as well.

Chapter 2 - feeling fine.

"...not out of the woods yet Sammy"

"it seems that Dean is unaffected, mentally, by the demonic turn of his soul."

Castiel was standing in the library of the bunker talking to Sam about the behaviours and characteristics of the demonic soul.

"It is essentially the same soul as before. The demons you are thinking of are hundreds of years old and are no longer in possession of their original bodies."

Sam is sitting at the table with his cheek resting in one hand while the other hand is busy taking notes from several different references.

"Is that why Cain was able to stop killing? Because he still has his original body."

"Yes, I believe so, and because he rid himself of the First Blade, out of grief."

Sam just could work out how this could possibly make any difference to a soul. As long as it has a body, any body, surely they're all the same.

"Ok, so why does that make a difference then? Is Dean going to be himself then, forever? "

Castiel sighs,

"Dean in his own body has all the same thoughts and feeling and senses he's always had, his memories are all intact and made in this body. When a demon... evacuates... a vessel and moves to another, it's memories stay with them, but do not match with the experiences of the new vessel. And after an extended period of time, the non-alliance between mind and body, inevitably causes a malfunction of sanity."

"What?"

"Although Dean case is slightly different because of the Mark Of Cain, and the first blade, which we need to separate from him before its influence affects him again."

Cas looks over his shoulder at the library door to check its closed, then lowers his voice.

"Dean will do anything to protect himself and the Blade, he will not be able to control himself if he feels either are threatened."

Dean's new super hearing can pick up every word his friends are saying and he is not impressed with his comrades talking about him behind his back. Plotting against him while he's out of the room. He gets up to give them a piece of his mind, picking up the First Blade on his way out the door.

"Now listen here. I'm not some nerd science project for you to research and discuss behind my back. If you got something to say or ask, just ask me ok. 'cause this secret whispering is pissing me off!"

Dean has made his way across the library and is standing inches in front of Castiel, the blade digging in his side.

"DEAN, WHAT THE HELL ARE YOU DOING? Put the knife down. Cas is just trying to help us. We called him remember?"

"Dean... It's ok, just think about who I am to you, I'm your friend and your anger is misplaced. Dean try to clear your head."

Looking down at the First Blade pushing at Cas side, then back up to his Angel friend, who is looking at him with the biggest, bluest puppy dog eyes he's ever seen on a man, of women for that matter.

'What the hell am I doing? Cas is my friend and I would never hurt him, or Sammy' Deans eyes moving from the blade to Cas then Sam in rapid succession.

Dean drops the knife and steps back from Castiel.

"I'm sorry man, I was just... furious for a second. I didn't mean it Cas, I didn't even know I had it in my hands. Are you OK, I didn't stab you did I?"

Deans worried now, it's the first time since Crowley vanished that he'd felt the rage overcome him. He thought it was because he hated Crowley, but Cas was his best friend behind Sammy and that hadn't stopped it.

"You were saying it's the Blade that's messing with my head yeah?"

Sam, now standing next to Castiel to check the angel for injury looks up at Dean with relief.

"It's ok, you didn't cut him. Dean I think we should make some sort of plan to separate you from the Blade until we can figure out a way to get rid of the mark. Before you get angry at an innocent bystander."

As he bends to pick the Blade up he feels Deans posture stiffen.

Dean can feel the possessiveness bubble in his veins.

"WAIT, wouldn't it be better if I keep the Blade, We can be the ultimate hunters with this with me."

Castiel looks to Sam in concern.

"Of course the Blade does not want to be parted from its master" now turning to Dean "But you must fight the pull and hand it to us willingly, we will not take it from you, we can't."

Dean gritts his teeth, picks up the Blade from the floor and storms out of the room.

"Where the hell is he going now? We cant just let him leave." Sam huffs out in annoyance.

"I think we should follow him Sam..."

The 2 men follow the sound of Dean stomping down the stairs into the basement, through the supply room and into the dungeon. Where they find Dean strapping himself to the demon chair, both legs done and left hand being pulled tight as they enter. The First Blade on the table in front of him.

"Tie my other hand." is all Dean says

Sam takes a step forward.

"I'll do it Cas, your strength might set him off... I'm just a weak human right? There's no need for concern is there?"

Deans eyes are clenched shut as he take deep slow breaths to keep himself calm as Sammy approaches.

As Sam sets to work with the last strap he talks to Dean about dinner plans to distract him.

"So I figured it's been a stressful few days and thought I make you something good for dinner. What do you fancy Dean?"

Eyes still closed tight, a small smile appears on Deans face.

"...hmm, oh I could definitely eat right about now, I was thinking something hot, and sticky... "

Dean has his eyes open now and locked on Cas standing on the far side of the room.

"What do you say Cas, you fancy something hot and sticky?"

Castiel knows what Dean is doing, he's getting agitated at being strapped down, even though it was his own idea.

"I know what your doing Dean, and it will not work on me, I have no real feelings of carnal desire for you to manipulate, I'm sorry."

"Grrrrrrr... Sammy, untie me, I change my mind, I don't like this plan anymore... Please Sammy, as my baby brother please, I need the knife, I need it... Please. Just let me go and I won't bother anyone I swear. "

Sam clips the strap in place and moves back from Dean, dragging the table away with him.

Dean start to growl and struggle in the chair, screaming obscenity at his brother and the angel.

" You're dead men, I'm gonna peel your skin off while you beg for mercy!"

Cas moves into the room and removes the First Blade from the table, looking to Sam he says,

"I'm going put this somewhere no one will find it, then erase the knowledge from my own mind."

Then looking to Dean, and standing up straight,

"I will fix this Dean, I promise."

With a light breeze in his wake, Castiel disappears from the dungeon.

"I'm gonna kill you for this Sammy, you just wait."

Dean whispers menacingly, getting comfortable in the chair.

So... Second chapter... it will get more action packed (hopefully), but they did have some stuff to sort out first. Maybe Dean can demonstrate the demon strength on a hunt next chapter or something. or if you have any ideas let me know... thanks