Cas's POV

I gently rocked Greyson as I watched something on Dean's computer, suddenly I heard Dean calling out for me and I flew to him, cradling Greyson close to my chest to keep him safe in case something was wrong, "Dean what is it?" Dean was struggling to breath and holding his head crying, I realized quickly he was having a panic attack and looked for somewhere to lay Greyson and when I realized we were in the impala I cradled him in my trench-coat and laid him on the floorboard and scooted myself closer to Dean. I slowly rubbed his back and whispered comforting words to him. "Shhh hey it's okay Dean, it's alright. I'm right here alright." Soon he was taking in deep gulps of air and when he realized I was there he hugged me tightly around my waist and buried his nose into my neck. I softly stroked his hair soothingly, "It's okay Dean, it's all going to be okay. "

Dean closed his eyes, "Gabe was afraid to leave me alone with Sam Cas… He didn't want to leave me with my baby brother…"

His chest started heaving in breaths again and I softly rubbed his back and encouraged him to take deep breaths, "Dean what are you talking about…"

Dean looked at me, and I don't think I had ever seen him so heartbroken, "Sam and Gabe… they went back to the bunker to have sex… I was in the shower so they left me a note… when I got out of the shower I found the note and I called them back… then Sam mentioned how its easier for us to sleep with our angels around…" He looked away from me and softly said, "And I told him that mine was starting to be scared of me… then Gabe intervened and he was trying to be helpful but everything he was saying was just pissing me off.. and I snapped and punched the wall pretty hard… then Gabe was talking me down and he… he said he wouldn't leave me alone with Sammy until I had calmed down… He was afraid to leave me with my little brother…"

I felt Dean's body start to shake again and I pulled him close, "Dean, I am sure it was not like that… you haven't even hurt anyone yet. Gabriel knows that okay…"

Greyson started whimpering hungrily and I carefully picked him up so he could see Dean, Dean's whole demeanor changed as he pulled Greyson close to him and hugged him. Greyson smiled and cuddled closer to Dean,"dada"

Dean laughed through the few tears on his face and nodded, "Hi little man."

I watched Dean cuddling our son and it gave me some sort of hope but at the same time I knew what would happen eventually. Dean was a hunter and the more he killed monsters the closer he would get to killing a human and the thought terrified me, but for now I just wanted to watch Dean with our son. Soon Dean looked at me and I smiled a bit, and he smiled back, then I looked at the time on the impalas dash, "Dean you should get back to Sam so you can finish your hunt and come back home alright."

Dean nodded and gave Greyson a kiss on the head then handed him to me and I flew us back to the bunker intentionally leaving my trench-coat for Dean. Once we were back inside the bunker I gently rocked Greyson until I heard Chuck's voice in the library. "I told you to leave him be Lucifer, you are not even supposed to be here on earth Lucifer."

I sighed and stood up, gently putting Greyson on my hip so he could lay his head on my shoulder since he was asleep and I went out to the Library to see Chuck talking to Lucifer except Lucifer looked more see through like a ghost and I realized it was just his grace, "Father, Lucifer."

Lucifer turned to me and smiled, "Castiel"

I looked at him, "I thought you were not allowed to leave Heaven brother?"

Chuck replied, "Technically he hasn't left Heaven, he is using his grace to project a part of himself here so he could talk to you."

I sighed a little, "I am guessing this is about Dean then…"

Lucifer nodded and stepped closer to me, "He should stop hunting Castiel… the more he kills the worse it will get…"

I nodded a little, "I figured that one out already thank you brother… I cannot make Dean do anything, especially stop hunting, it is in his blood…"

Lucifer sighed and then looked at Greyson, "The Mark craves anger and self-destruction and most of all Blood Castiel. All those things are huge pieces of Dean's personality, he will not last long if he doesn't stop hunting… the bloodlust will overtake him at some point and he will kill someone he loves, like I killed Lillith…"

I bit my lip and shook my head, "Dean would never kill me Lucifer."

Lucifer shook his head, "No Dean wouldn't but with the Mark of Cain anything is possible little brother"

I shook my head vehemently, "No damn it Lucifer Dean wouldn't do anything to hurt me."

Lucifer sighed and looked at me, "Castiel if you let Dean continue to hunt there will be a time when the Mark pushes him so far he kills a human…"

"I do not wish to do this brother, not now, not in front of my son please. I can not do this" I said as I rubbed Greyson's back trying to calm myself.

Lucifer nodded and gently touched my shoulder, and then caressed Greyson's cheek, then he disappeared. Chuck looked at me and softly came over and softly touched Greyson, "He is beautiful Castiel. He looks very well."

I nodded, "He would be better if you would save his father from the hell he is going through."

Chuck sighed, "Castiel you know that the Mark is a lock and a key. I cannot simply remove the Mark it has to be transferred to someone else."

I sighed and shook my head, rubbing Greyson's back gently. "I need to get Greyson to bed"

Chuck nodded and then disappeared, I closed my eyes and went back to the bedroom I shared with Dean. I laid Greyson down in his crib and covered him with a blanket before sighing a little, gently rubbing his back. I closed my eyes, thinking about Dean and how far the Mark of Cain would twist Dean before Sam tried to remove it. I watched Greyson sleeping and in all honesty he was the purist thing I'd ever had the chance to hold in my arms, he was my whole world and since his birth I could hardly imagine how I had gotten by without being his father. I softly kissed his head and stroked his hair gently, and then I heard my phone ringing and quickly got up and answered it, "Uh hello?"

Dean replied, "Hey Cas"

I smiled a little, "Hello Dean, is something wrong?"

Dean sighed, "No I just wanted to say good morning to Greyson?"

I rubbed his back, "He is still asleep, he wasn't feeling very good last night, I had troube getting him down."

I could hear Dean sigh, "Shouldn't the angel part of him make him immune to getting sick?"

"Well Dean you have to remember he is still very young, it may make it harder for him to fall ill but he is still half-human so he can still get sick, I am sure he will likely fight it off quickly though." I said as I gently rubbed Greyson's back. Greyson whimpered a little and scooted closer to me, "Greyson daddy's on the phone"

Greyson whined but softly turned over and looked up at me, I softly held the phone to Greyson's ear and smiled a bit. "Hey buddy, Papa says you are sick, don't worry kiddo once Uncle Sam and I get back Daddy will make you some super special soup okay."

Greyson smiled a little but didn't say anything, I softly replied, "He is smiling at your voice, he is just not feeling well Dean,"

"It's okay, thanks for letting me talk to him Cas, I love you," Dean replied, I could tell there was something he wasn't saying but for not I'd let it be for now.

I softly pulled the blanket over Greyson and nodded, "Of course Dean, I love you to."

Before I got the chance to ask how the hunt was going he had hung up, I sighed a little and tossed my phone aside, Greyson reached up for me and I gently picked him up and held him. "Easy Greyson." He nuzzled into my chest and whined, I realized how warm his body felt, then touched his forehead and I felt he was running a fever. I frowned and called Dean back, "Dean… Greyson is running a rather high fever… what should I do?"

I could hear the worry in Dean's voice, "There should be some baby Tylenol in my medicine cabinet, I bought some just in case he ever got sick. Give him a cap full, if he wont drink it by itself mix it with his bottle, it may take an hour or two but it'll lower his fever, if it doesn't call me okay"

I nodded, "Okay Dean I will."

I then hung up and did as Dean said, Greyson took it with little fuss. I stroked his hair gently and kissed his head. After two hours I touched my fingers to his temple and his fever had gone down a little, it wasn't much so I texted Dean. He didn't respond so I assumed it was okay. I softly rocked Greyson back and forth, aside from his fever and lethargicness he was still a happy little one-year old.