SOOOOO

I HAD A THOUGHT

So, headcanon!

Rosie has a dark secret. What is that secret?

Junko is her older sister.

Think about it. The Children of the Scarlet King match the description of the bride they were born under somewhat.

And here is what is said about the Second Bride, A'ghor.

The second bride was A’ghor. A great hole was rent in her soul that she could not fill, and so she despaired and wept. She brought forth many children, and her children brought forth armies in a tide unthinking, to go forth and conquer.

Junko and the Remnants of Despair fit that description like a glove.

Doesn't help that some of the first Ultimately Despairs (besides the reserve course and Junko and Mukuro) were the 77th class, and we all know the relationship between The Scarlet King and the number 7.

Mukuro is also naturally related to Rosie as well, via the fourth bride, A'zeib.

The fourth bride was A’zieb. She was vast and powerful, and terrible to behold, taking the form of a great beast. Her children were like her, and feared no weapon nor magical spell, for their injuries were healed, and their hides impenetrable.

Now, you may ask how Mukuro was killed despite her seal.

There's 2 orders of the Scarlet King's children. The Leviathans, the ones who get the full advantage of the blessing, and the Demi-gods, who only get part. Mukuro was a demi God, and thus wasn't fully invulnerable.

And technically, this does make the Monokubs and Wilma, an Ethgoesboomfan1987 OC, her nieces and nephews.

So yeah.