A/N: Wow guys-last chapter of the main story! Thanks for sticking with me! I enjoyed writing this story very much and I can't wait to continue on the sequel (yes, there will be one, I've decided).

Thank you to the following people who reviewed last chapter: Mirabilem Electo, The Mysterious Shadow, Maddy Love Castiel, and keacdragon.

So, without further ado, I believe I can start this chapter.

All mistakes are mine 'cuz I'm human.

Disclaimer: I do not own Supernatural, nor any of its characters.

Allons-y!

"Don't kill Gazardiel," Castiel says, appearing behind the angel. "Please, Nathanael."

"Castiel, after what you've done in Heaven, this is your just punishment," the angel-Nathanael- says, lowering his blade. "Nobody should try to fix it. Either you live with this insanity or die right now."

Castiel lowers his head. "What would you do with the vials if you killed me?"

"Keep them up in Heaven," Nathanael says. "Use them as some kind of torture."

"What the hell kind of business are you running up there?" Dean asks.

"One where we're trying to rebuild a stable Heaven," Nathanael snaps. "You humans should stay out of our business."

"Let Gazardiel go, and I'll do as you want," Castiel says. "He does not need to get involved in this."

"Still trying to be the hero," Nathanael says, narrowing his brown eyes. "Fine." Nathanael lets Gazardiel go with a shove and advances toward Castiel, who takes a visible gulp of fear.

"Cas, no!" Dean yells, but Sam holds his brother back. "What the hell Sam?"

Nathanael hands one of the vials to Castiel, who takes it hesitantly. "One the count to three, we open the vials, and Lucifer and the Voice will go back in," Nathanael says. "Just like it should be."

"Cas, please, don't do this," Dean says, his voice breaking.

Castiel looks over to Dean, watching sad green eyes. "I can't let anyone die," Castiel says. "And I know this is an overused phrase, but… I'm sorry, Dean." Castiel returns his attention to Nathanael and at the same time they open the vials. At the same time, both mists shoot out of the vials, and then directly stream to Castiel. Castiel lets out a yell that tears Dean's heart and Dean stares in horror as Castiel falls to the ground, writhing in pain.

Gazardiel shakes his head. "No," the angel growls. "Castiel does not deserve this." Dean and Sam watch, surprised, as Gazardiel appears behind Nathanael and stabs the angel straight in the back with an angel blade. A white light consumes Nathanael and a moment later the angel falls to the ground, dead. Gazardiel then motions for Dean and Sam to rush over.

"I need you to hold Castiel down," Gazardiel commands. "I'm going to try to get them back out, but it'll be tricky."

"How?" Dean asks with panic in his voice as he tries with Sam to hold Castiel down. Blood pours down Castiel's shirt and face. "What's happening to him?"

"Their fighting over who is taking control," Gazardiel says, frowning. "They don't realize they're ruining his body."

"Then how are you going to take them out if their fighting?" Sam asks. "Isn't that going to be like asking a mouse to stop a tidal wave?"

"Maybe," Gazardiel says. "But I'm not letting my brother die." Gazardiel puts his hands over Castiel's chest. "I know he only meant to do right."

White light emits from Gazardiel's hands and the angel's face furrows in concentration as he tries to locate Lucifer and the Voice.

"Stop it!" Castiel yells.

"Cas, it's going to be fine," Dean says, though he's close to crying on the spot-it didn't seem so likely.

"I located them," Gazardiel says. "Dean, give me the vials."

Dean nods and grabs the vials off the ground with shaking hands before giving them to Gazardiel.

"Whatever happens, I need you to hold him down as best as you can," Gazardiel says. "This will be extremely painful for Castiel."

Dean didn't like how much pain Castiel was being put through, but he and Sam hold Castiel down as the angel continues to fight, still screaming.

Gazardiel begins to speak in Enochian and Dean and Sam watch as two mists begin to rise out of Castiel's chest. Castiel's eyes snap open and with a gust of wind, Dean, Sam, and Gazardiel are thrust backward.

"Cas!" Dean yells, standing up. "We're only trying to help."

Castiel whips around to stare at Dean. The two mists seep back into him and Castiel's eyes keep changing from blue to red and back. "Back off."

Gazardiel stands up, shaking himself. Gazardiel resumes speaking in Enochian and Castiel covers his ears as he sinks to the ground.

"Dean!" Sam says and Dean nods as the both rush over back to Castiel and hold him down again. Gazardiel grits his teeth and holds the vials back over Castiel, resuming the previous chant. Castiel's pitiful cries were already breaking Dean and Dean didn't think he could take much longer. Finally the two mists rise again out of Castiel and they go into the two vials. Gazardiel quickly closes them and the three back off. Castiel lays still, eyes closed. Dean waits a moment before kneeling beside Castiel.

"Cas?" Dean asks, staring at his angel.

"He's fine now," Gazardiel says, panting. "I need to check his wounds, but he should be okay now."

Dean watches as Gazardiel stands over Dean, a bright light emitting from his hands. After a moment, Castiel appears untouched, with no blood or wounds.

"Cas?" Dean asks again, searching the angel's face.

It takes a moment, but soon Castiel opens his eyes. "Dean?"

"Cas?" Dean repeats, words failing him.

Castiel struggles to sit up and Dean helps him.

"You're okay," Dean whispers, staring at the angel.

Castiel nods and then turns to Gazardiel. "Thank you, brother."

"Anytime, Castiel," Gazardiel says, and then puts the vials in his coat pocket. "Now, I'm going to put these on ultimate lockdown. This won't happen again."

"Thanks Gazardiel," Dean and Sam say.

"Keep watch over him," Gazardiel says and then disappears.

After a moment Castiel speaks. "Dean…"

"Don't get me started," Dean says, instantly jabbing a finger at Castiel. "How could you do that?"

Sam rolls his eyes and sighs. "Here we go."

"Dean, I didn't want anybody to get hurt," Castiel says, staring at Dean.

"Yeah, I gathered that genius!" Dean says, his voice rising. "But still, you didn't have to do that! There's always another way!"

Castiel remains still as Dean berates him.

"Bad angel!" Dean says. "Never, ever, do that again! No more self-sacrificing yourself! Do you know how much you make me worry about you? You stay by my side and don't leave me! Do you understand?"

"Yes, Dean," Castiel replies softly.

Dean lets out a huff. "Friggin' angel," Dean says, smiling, and then grabs Castiel by his shirt and then kisses the angel.

"Ugh, Dean, really?" Sam questions, looking away.

Dean ignores his brother and continues to kiss Castiel, both winding up on the ground. Sam sighs and then heads back into the house, deciding to go look up another case.

After a moment Dean pulls away and smirks. "You're my angel, Cas," Dean says, staring at Castiel's blue eyes. "You got that? Don't ever leave me."

Castiel lets a genuine smile dominate his face. "I promise Dean," Castiel says, planting a kiss on Dean's forehead, "never to leave you."

A/N: ….Do I really have to say it? ^^;; Yes, the story is over! Thanks to all who have reviewed! BUT, because I love you guys, there's an epilogue chapter which will be put up tomorrow. I enjoyed writing this story very much!

Funny story: I just finished typing this story, and I couldn't help but smile at the ending and my mom was like: "Why are you smiling?" And I was like: "O.o Uh… I'm just writing a story…" And my mom was like: "Well what are you writing that so funny?" And then I was like: "What, I can't laugh? I'm just typing a story and I just happened to laugh." Ahhh, good times writing this I tell you.

ALRIGHTIE PEOPLE. If you enjoyed this story, I recommend you read other stories I've written :D I'm not sayin' ya have to, but if you want, the door's always open.

Until next time, my readers! *salutes*