#posey sb!lust

[sb-underlust]

First thing's first! It's you and your best friend!

I changed the spelling of the rose's name and added a new Flowey into the mix as in this version, Asriel didn't die during his infancy, but instead, his teen years. Using the broken pieces of the human souls, parts of his own soul were restored, giving the roses that grew from his dust parts of his personality.

Rosey still has no concrete memories of his past life, whilst Posey only remembers the worst of it.

[sb-underlust]

Have you done everything you needed to do? Talked to everyone you could? Satisfied with your actions and ready to be judged for them...?

...

Stay determined, human, for you are now entering New Home, arranged to marry the king.

Which doesn't really seem so bad, though you probably would rather him be your dad than your daddy...

He doesn't really want to sleep with you either. He just needs to produce a half-human heir in case Monster Kid fails to shatter the barrier.

Or so he thinks. Regardless of the outcome of the battle, Rosey reveals himself to Asgore, saying that he might be able to work together with the human to pass through the barrier, and if they're successful, the two can find a peaceful, yet effective way to destroy it.

Hah...

Haha...

HAH!

Do you really think you can get out that easily?

Just when you're about to leave the Underground, Posey sneaks up and pierces through your bag with thorny vines, grabbing your flower friend and pulling him over to deal the killing blow. Posey absorbs all the pieces of Rosey's soul and traps you in a room in between. There's no way out. You're... autosaved in here?

You have no choice but to fight Posey and free Rosey from his control before he takes YOUR soul as well. And it won't be easy, either; Posey is DETERMINED to complete his mission.

The new form Posey takes, due to being comprised of a monster soul and just enough fragments to form half of a human soul, is nowhere near as powerful, as say, Flowey during his bossfight in Undertale, but it's still a tougher fight than any monsters you've faced before Back then, it was just them making a display for courtship, but rest assured, Posey is NOT messing around. He lacks the ability to create his own SAVE file, but he can at least cause issues with yours, altering your stats and saving at a time that's not very convenient for you (such as when you're at low HP).

Fortunately, so can Rosey. During the soul segments of the fight, he'll gradually gain more control over this form, healing you along the way and keeping Posey from going back to when you were hurt. Eventually, Rosey gains full control and separates the two flowers, allowing you to finally leave the room, and the Underground as a whole.

[sb-underlust]

I know I said I wasn't going to post Asriel and Chara until actual comics are released but uhhh. Guess I'm a liar.

Content warning for mentions of CSA, suicide, emotional abuse (or at the very least, a very unhealthy and codependent dynamic), and self harm.

As prince of the Underground, Asriel Dreemurr was pretty well-liked by other kids, but there was definitely a disconnect that kept him from really connecting with them. His loneliness ended, though, when a human, Chara, fell into his life. The two were inseperable, and Asriel was the only person Chara ever trusted enough to confide in.

But as time went on, problems began to arise. When he started developing a crush on Noelle Holiday, Chara became extremely possessive. To keep him from asking her out (which would, in their eyes, lead to him seeing that there are better friends than them and leaving as a result), they began dating Noelle before Asriel could, until Noelle's mom caught them making out during the Holidays' Christmas visit with the Dreemurrs (and without the excuse of mistletoe? Scandalous!). The Holidays stopped coming over after that, much to Asgore's dismay. He would really miss Rudy in the following years...

The Noelle drama caused a huge rift in Asriel and Chara's relationship, but as Chara made the excuse that they were just sparing Asriel the hurt of knowing that Noelle wouldn't date him anyway since she doesn't even like boys, Asriel silently resigned and tried their best to sweep it under the rug.

One day, Chara told Asriel that they were genuinely sorry about what happened, but they couldn't really forgive themself, so in order to make up for all the hurt they caused him, they constructed a plan to save the entire Underground. Chara would kill themself and give Asriel their soul, and all he would have to do is pass through the barrier and get six more human souls. Asriel refused to let Chara die, but they insisted it was the only way things would be better for everybody. Besides, he wouldn't want to rob his family, his people, of what was likely their only way to be free, right? They thought he was better than that.

And thus, Chara died. Panicked, Asriel tried to absorb their soul and carry out the plan, but they just... Couldn't. The intense fear he had kept his from from accepting the soul. So he gave it to Asgore and Toriel, ran off to the rose garden Chara liked to hang out in, and joined them in death, unable to live without their best friend and feeling like it was his fault for being unable to stop them.

Should SB!Underlust's version of the true pacifist route (the Chastity route? still working on the name) be completed, Posey uses the souls of all monsterkind in order to fuse with Rosey and become Asriel again, but their combined soul isn't truly back to how it once was, even if their body is. "Asriel" remains in this new plural state and will eventually see the surface, just not yet. Rosey thanks Frisk for being the friend he always wanted and Posey plans to one day be able to let go of the hurt Chara had left him with.

The horrific circumstances that led Chara into the world of monsters, from their trauma to the lack of support, left them desperate for a feeling that they were in control: over their body, over their emotions, everything. Part of that relationship they had with Noelle wasn't just out of jealousy, but also being able to engage with intimacy in a way that wouldn't be faced with rejection as Noelle would be on board with the more intense side of Chara if only as a way to rebel against her strict mom.

Chara often buried their distress through not just sexuality, but also self-injury as ANY feeling was better than the ones plaguing their mind.

Ever since Alphys's experiments, they have been reduced to the void that exists within everybody, the constant need to not feel empty.

Should the Conquest route (SB!Lust's "genocide" equivalent) be taken, the once dormant remains of Chara's soul will become aware again, brought to life by the new human's desire to get some sort of stimulus out of a world whose options have been exhausted.