Moonlight was battling with Nightmare Timekeeper, when she used her brother as a meat shield to protect herself from a heavy blow that was supposed to hit her, causing his sister to be in complete guilt, tho she became a nightmare somewhere between weeks or months after his death.
"In order to avenge you, brother... I'll take her down..!"
She does a little bit of trolling.
If you don't know the context, it's that: She slashed Birthday Ghost, Altered Moonfart Cookie into a state that cannot be reversed, and disintegrated Dark Cacao Cookie's son infront him and also altered him.
(Nightmare Timekeeper usually hops into other places, so it's not that unusual for her to be not in her respective place)
Timekeeper thought of exploring other dimensions to see what it looks like outside of the Cookie Run Dimension, so she prepares her Sonic Embroider and opens a portal that leads to a different dimension. Upon exiting the 17th dimension, her behavior became different from before(Presumed to be the thing that turns cookies into nightmares attempted to turn her into one). When she heads back to the TBD, she questions if it became different, which Baguette replied that it's the same and that her mind was somewhat mixed after entering each portal.
When the manfestation has taken over her, Timekeeper takes out her Sonic Embrodier and alters the dimension, revealing herself to be a Nightmare(It seems to be a fail, but it turned her into a Nightmare mentally), she opens a portal heading to somewhere and leaves the TBD to crumble to the ground. Arriving at the Dark Cacao Kingdom, she watches every cookie struggle to survive from the beasts that emerged from the darkness,
A little preparation for my comic studio:
It's not only the Nightmare Cookies that are gonna be there, but also other cookies (like Alternate Latte, who has yet to appear).
If possible, there might be chaotic stuff added.
Edit: There will be a temporary comic for them, as I thought that I had to make it after school has ended.