Author's note: How about a Cas POV? He should be the most objective here.

The man was a curious human, at least to Castiel. The angel didn't want to impose and try to 'fix' his speech impediment and he also believed that offering to do so would be unwelcomed. In the end, it made nearly no difference, because he and Dean seemed to be able to communicate on a deeper level.

There was that form of understanding Castiel only saw in true soulmates, a rarity in the world, for all its billions of years. Dean seemed so happy with him, and Castiel should perhaps question it, but he wasn't going to. Dean deserved to be happy.

Especially now that the world was in danger of it's own maker.

Speaking of which...

Out of all people his Father could raise to help him in his destruction, why choose Lucifer? Just as he and Sam figured out what they needed to do to stop Father once and for all and coming up empty because nobody in this world had that much grace left, He decided to send Lucifer to... To what end? To stop them?

Perhaps the spell was still enforceable?

Or was he toying with them, waving a solution in their noses?

It turned out that 'Lucifer' was nothing but a mirage, one they easily dispersed, but it did give Castiel an idea.

Mike was still staring confusingly at the spot where Lucifer was standing minutes ago when Castiel suggested they could try and find the last archangel left alive. That they could go down to hell and try to extract him from the cage. He explained the concept of the grace bomb he and Sam discovered, and pointed out that the only one who could do it was Michael. Sam and Dean were actually considering this, while Mike stood off to the side, eyes wide, confused and fearful. Castiel hadn't understood it then, nor did he have time to contemplate such reaction.

Dean agreed to set Michael free.

That was when everything went sideways.

A loud chuckle came from the top of the War room balcony and once they all turned to look at who it was, Castiel felt himself being pushed away. He was telekinetically being shoved out of the way, crashing into Mike and tumbling over him. Dean was thrown next to them, while Sam and Jack ended up sliding down the opposite wall. Chairs, books, mugs, beer bottles all went flying and smashing into walls around them.

"Come on, guys! You sure you want to get rid of me? I am the one who is always keeping you alive?" Chuck spoke as He descended down upon the War room from the balcony above. How biblical of Him. Castiel was just about to turn to Him and make a stance, even his angel blade slid from his sleeve, but he was stopped by a small whine from underneath him.

The angel looked down upon the hurt hunter, a chair leg embedded in his ribs as Mike gasped for air. His lung must have been pierced.

Normally, driven more by logic then emotions, Castiel would turn to face God first, then try to salvage what most likely could not be salvaged, but something drew his attention to the man fighting to breath. An odd vibration, a resonance of sort. Something...Familiar.

So while Dean and Sam argued with Chuck, who was giving one of those ridiculous villain monologues (could He be a bigger cliche?) Castiel glanced at Jack to make sure the kid was alright, then crouched down to the hurt hunter.

He took a look at the wound, considered how much power it would take to try and heal him when Mike grabbed his hand, and gave him a pointed look. Castiel frowned, uncertain of what the hunter wished to convey. However, upon another inspection of the wound, Castiel noticed something... Odd. Scar tissue.

So he took the man's blood drenched shirt and tore it open, then gasped at the sight of one of the most powerful and most dangerous sigils Castiel had ever known.

Mike took his hand again, brought it up to the piece of the wood that stuck out of his ribs and motioned for Castiel to yank it out. Castiel had no clue why he obeyed.

Mike silently screamed then gasped for air, drawing everyone attention. Castiel looked back only to see a very smug expression on God's face, while Dean was extremely pale, worried and scared. And angry. Oh so angry.

"Pppeeeaaasse... Pllleeasee. 'Et 'em ooooo."

Everyone was stunned to hear Mike try and speak and actually managing to make sounds. He grabbed Castiel's forearm and on instinct, the angel helped him up, knowing well that a mere human would be long dead by now.

"Oh, how adorable. The tiny human still thinks I might show some mercy."

"Pppppppllllleeeeese."

"Um... No."

Chuck replied with a chuckle, looking si superior, Castiel truly understood what it meant to detest someone.

"Pllease. I... I never aaaaasked for anything... pppllease..." Mike's speech was actually getting better, as if the pierced lung finally allowed air to flow through his vocal cords. But his words, they struck Castiel in a way he did not want to admit. It was not possible. He was not him.

"How humble of you. The answer is still No." Chuck said and Castiel realized He still hadn't made the connection the angel did. Castiel slightly gasped as Mike's hand reached out and took the Angel blade, but he allowed it, not even sure why. The blade dipped lower, nicked the sigil breaking it, before the hunter clenched the blade tight and stepped forward. When Mike spoke up again, his words were loud, his voice unwavering and strong. His tone... Resentful.

"I never asked for anything. I only ever obeyed. I never... I never asked.I only obeyed! I ONLY EVER OBEYED!" Mike - Michael shouted, lifting the blade high. His grace pulsed, thickening the air, and God's eyes went wide as he finally realized who it was that was standing before Him how.

But it was too late. Not even His surge of power could have stopped Michael's hand from rushing down towards his chest, not even that loud "Nooooooo." could have prevented what was about to happen next.

An angelic suicide was a powerful thing as Castiel witnessed it with Gadreel. But for an archangel to perform it, for Michael to do it... Do give up his own life to stop their Father...

It was a true act of rebellion.

Or...

As the light started engulfing the room, scorching everything in its path, Castiel saw that protective barrier before Sam and Dean, and he saw that look in Michael's eyes, directed at Dean, and he heard his words, the very silent "I am sorry." And it made Castiel see.

This was not an act of rebellion.

This was an act of love.

Um... Did I just kill Michael?