My run down idea (it pretty rough bear in mind, don’t wanna forget about this)
Plot story hos the soul transform in their own body and mind, this does not deter them for trying out new thing as they went out with their new host after it was stolen rightfully from thier owner. But that doenst matter now does it. No longer needing the host you finally get to experience first hand; of Everything. Yandere sanse, yandere jevil, yandere spanton as you fell into the dark world as mage with a cloack of shadow - you were very good at evading your host - you were thirst for the freedom - to breack the limitation you had ahvng a ghost - you title yoursef as doing a afavoru to the ohter host surely they can go back to their previously however, after all a puppet witout it string is nothing but a hollow of their previously self.
You felt warm, feeling proud, dust dissapted in an emmpty town, room filled nothing but scatter dust. You walk stoping once in a while, looking at uour foot oof you shoes particles of dust fall you eye focusing feeling like a child for the first time watching a snow ever fall, you haven't stop grining since; you can finlly fullfill your curioisty of this town, of this world - what more do you need.
But you have the pweor to turn back time. Easy peasy, what a frigtening smile you have; never fit in with the action you had done. But does that really matter when thing just reset itself.
===Reset===
There again back in the overworld, with it town filled with monster all shape and size. You found lip turn upward as life play it infront of you; monster preparing for the day, just standing, just existing.
This day got better and better.
(need better encountering scene)
"heyoo kiddo, why did the skeleton jokes about the god"
You felt nervousness reap over you as you glance behind you a farmiliar blue jacket worn, plaster smile seeming permanent embedded to the skull. You know that he know; thing can never ne forgotten between you too.
"Cat's got your tongue let me repeat myself, why did the skeleton joke about the soul..."
You never gotten to joke as you simply run, you would have prefer if you have encounter him within a host. You felt expose, wronged from the evil deed you done, you can't stop now, no can you now. You are god, god shouldn't feel pile og guilt building up from simply feeing their curiosity, god shouldn't feel as naked to the eye mortal, and they shouldnn;t care thing can be back to the way they are ; no scractch can't be undone. But it the scare, the heales scare, and that skeleton is the embodiment to remind you that
(meeting jevil)
He lost his mind and now a soul where he can see you expose WITH A BODY? Now he wouldn’t be so lonely after all, another party ready to join his REIGN.
(Meeting spanton)
Would he willing to let another go, he need to go to [HEAVEN], with that heart-shape-object. Getting onboard with addiction after barely recovering, him and MIKE?. This isn’t going well.
And so one as fort, the one you all be wanting is probably the interaction between Goner and Kris after the midst of battle. Kris know the reset, Gone would went wild with the soul being snatch from strange force, THEY BOTH WILL FIND THEM, NO MATTER WHAT.
(Meeting Susie)
Either heartbreaking or heartwarming depend on Susie comprehension of the situation.
You were the one that control kris to be friend with her and doing all those decision on their gang journey playing hero. Yeeah both, both is good.
(Meeting Ralzei)
Now this bound to be interesting, he knows you you exist, close to being worshipper, he live for your approval, willing to let by gone be by gones as long as he get close with you.
Inspiration siswritesyandere
So, I'm not the best visual artist, but I drew a scene from my Yandere Deltarune fic.