X Sans Gets Brainwashed Fanfic: What Could the Plot Be?

It could be a rival from X Sans' past. Someone who has always been jealous of X Sans' power or popularity in the fanfic world. This character might have finally found a way to get revenge by brainwashing him.

Well, it could be that Cross is exposed to some sort of mind - controlling device or magic. Maybe an enemy uses a special spell to make Cross forget his true loyalties and start working for them. For example, the enemy could make Cross believe that his former friends are actually his foes and he has to fight against them.

Another possibility is that it could be an alternate version of one of Cross's friends. This alternate version has been corrupted in some way and wants to drag Cross down with them. They use their knowledge of Cross's weaknesses and insecurities to successfully brainwash him, believing that they are doing the right thing or that they are actually helping Cross in some warped way.

One possible plot could be that an evil force brainwashes Casshan. They manipulate his memories and values. As a result, Casshan starts to target the people he used to protect. His friends then have to find a way to break the brainwashing, which could involve a long and difficult journey filled with many challenges and revelations about Casshan's true nature.

Perhaps the fullbringers are being controlled by a new, unseen enemy. This enemy wants Ichigo out of the picture, so they use the fullbringers to brainwash him. Ichigo, while brainwashed, starts to cause destruction in the Soul Society. His actions draw the attention of the Soul Reapers, who are initially unaware that he's been brainwashed. As the story progresses, some of the more perceptive Soul Reapers figure out what's going on. They then team up with Ichigo's friends from Karakura Town to find a solution. This could involve a lot of exploration of Ichigo's mind and his past relationships to find the key to breaking the brainwashing.

In a 'sans becomes a girl fanfic', perhaps Sans - now a girl - decides to use this new form to her advantage. She could try to infiltrate a group that was previously only male - dominated in the Underground. This would lead to a whole series of adventures as she tries to keep her true identity a secret while achieving her goals.

Well, one possible plot twist could be that Tsukishima's brainwashing of Ichigo is part of a larger plan by a hidden villain. Maybe this villain wants to use Ichigo's power for some evil purpose. Tsukishima might be forced to do this brainwashing against his will in some way.

The plot could involve a character using some sort of magic or mind - controlling device to make others obey them. For example, a villain in a fantasy world might brainwash the heroes so that they only listen to his commands. This could lead to a lot of internal conflict within the brainwashed characters as their original values and loyalties clash with the new forced obedience.

In this brainwashed Allen fanfic, it could also be that the brainwashing is part of a larger scheme. The Millennium Earl might be trying to use Allen as a weapon against the Black Order. Since Allen has the Innocence and his special powers, if he's under the Earl's control, he could cause a great deal of damage. The fanfic could then detail the battles that occur as a result, with the Black Order having to fight Allen while also trying to save him. They might have to find some long - lost knowledge or a special item to reverse the brainwashing process.

One characteristic could be the unique blend of the horror and lust elements from the two 'sans' characters. It might play with the contrast between the spooky or menacing nature of horror sans and the more sensuous or alluring aspects of lust sans.