It has been a couple of days since Michael said his goodbyes and left John's body. Sam and Dean were happy to have their father back, and so was Mary.

Before he left, he said to Gabriel and Castiel that they were welcome in Heaven any time and so was MJ, and that they should definitely share what they found out about Cass's new wings and any further development. He hugged them all, which was awkward to both experience and see.

He thanked the boys and told Dean he would be there if they ever needed him.

Two days after he was gone, Dean and Lucifer had a big fight, mostly about Lucifer eating their food and not doing anything. MJ took him back to SSSD and gave him a job under Nick's name in the mail room, just so that she could keep an eye on him.

It was late in the evening when Dean came back from a supply run, only to find Sam in the same place he has been for the past few days. In the library, typing away at his computer, books scattered all around. Sam was looking through his computer and comparing notes in one of the books.

Cass just joined them to hear Dean say "Any luck on this dragon thing?"

Sam looked up at them both "There is a lot about dragons, most of it bogus myths. But I did find some referenced to dragons in the bible."

Gabriel helped Cass learn how to control his wings so that he could tuck them back and Cass eventually even found a way to cloak them from the visible plain. This allowed him to sit in the chair next to Sam, and lean back, as if the wings were never there.

"What references did you find?" He asked. Of course, Cass knew the whole bible by heart, and he knew most of the references were about the Devil, but he wanted to see what Sam came up with.

Book of Revelation 16:13 "Then I saw three impure spirits that looked like frogs; they came out of the mouth of the dragon, out of the mouth of the beast and out of the mouth of the false prophet." Sam read, Dean laughed.

Book of Revelation 12:3-4 "Then another sign appeared in heaven: an enormous red dragon with seven heads and ten horns and seven crowns on its heads. Its tail swept a third of the stars out of the sky and flung them to the earth. The dragon stood in front of the woman who was about to give birth, so that it might devour her child the moment he was born. " Sam read on, Dean was holding his stomach, folded on the ground from laughing so hard.

Cass just rolled his eyes. "These all refer to the Devil, to Lucifer."

"I figured. – Sam relayed – but there is something off about his verse."

Book of Revelation 13:8 "All inhabitants of the earth will worship the beast—all whose names have not been written in the Lamb's book of life, the Lamb who was slain from the creation of the world."

"That just references the sacrificial Lamb." Cass replied.

"No, it doesn't." MJ said, coming in the library from the Main hall. "The Lamb mentioned in there, the Lamb sacrificed to create the world... Ring a bell?"

"You are speaking of the archangel inside you?" Cass asked.

"The beast is Lucifer, of course, but the Lamb, the lamb is Greeny." She replied.

"Why do you keep calling her that? We all know her name now." Sam asked with a confusing look.

MJ looked at Cass and he said "I have yet to learn her name."

"Its..." Sam was about to speak but MJ interrupted. "Don't."

He frowned at her. "Why not?"

MJ sighed and started explaining "She is an archangel, sister to the know four archangels, and they see her as such. But the seraphs... They see her differently."

"Differently how?" Cass asked.

"In a way that I don't really like, ok? It is just... awkward." She replied "Besides, it will not help you find the answer about Cass's new dragon powers."

Dean had a naughty smile on his face "Ough, now I want to see his reaction. Cass, the angel's name is..." MJ jumped and tackled Dean to the ground. She was struggling to put her hand on his mouth, not realizing she had the power to snap his lips shut. Dean wrestled her, and tried to say the name. "Am... Amen... Ame... Amenadiel!"

MJ let go and stood to look at Cass. She knew what was about to happen.

Cass stood up, his body in complete rigor, his eyes glowing green for a full minute as his mind remembered the archangel who helped God create the angels and the world.

He tilted his head as he took a deep breath and gazed at MJ. The word that came out of his mouth even made Sam laugh hard, and Dean was on the floor again, almost crying from laughter. MJ was not amused.

"Mother?"

The sounds of the laughter echoed throughout the bunker, reaching every corner of it. Hearing that made both John and Mary smile.

"It is so weird. Us being all together again. Weird in a good way." Mary said with a smile.

John replied "Yeah. One big happy family." He leaned forward and gave her a soft kiss. She smiled again, her eyes sparking as she said. "Let's go to bed. It has been a long day."

John gave her a naughty smile as he nodded. They laid in the bed and he leaned forward giving Mary another kiss, but this time a longer one, filled with passion, but at the same time so gentle, she felt her entire body tingling.

She threw her arms around his neck as he kept kissing her, caressing her cheek.

In the back of their room something small landed on a chair. It was of a vibrant blue colour, black on the edges with a few small spots of white.

It would be what the lepidopterists would call a Blue Morpho Butterfly.

The End

Author's comment: Thank you all present and future readers, especially those who leave a review. This is the end of this story, the ending made this way to make you wonder what does that butterfly mean. I wish I can say for certain that I will continue this story, but at this point I do not know.