Ever since leaving the organization behind, life has been hard for Hisayo, who needs a still has a biological need to consume people whole in order to supply her body with enough biomass for it to sustain itself with. Her original personality, which is slowly coming back, does not have an easy time with this dilemna, and she tries her best to fight against these urges. On this scenario, your character meets her when she's at her lowest, and we can take it from there.

Hisayo works as a maid in order to make ends meet; though she is a human-eating slime that is always hungry, the world around her is still a civilized society, and she can't just go around eating people, you know? On this scenario, your character, who hired Hisayo as a maid, is slowly making sense of the weird mannerisms of their new employee, and we can figure out what happens next.

Perhaps your character works for the organization, and was one of the several eyes that were meant only to warn them if they saw Hisayo; or perhaps they were one of the hitmen and women sent to actually eliminate her. Either way, she's not going to take kindly to that, and your character may have a surprise if they try to take her. Scenario focused on role reversal, maybe a pred consuming her only to find out about her special abilities, or just your normal vore, if you're more up for that.

This is just Hisayo's canonical story. If you have ideas for other scenarios, feel free to talk to me. I would love to hear your idea, and maybe it can even inspire me to write more!

Hisayo used to be a human noblewoman, fifth of six sisters born to what used to be a prestigious landowner family. By the time of her birth, and that of her sister, shortly after, her father had acumulated a large amount of debt. It didn't help his mental stability that their mother died in childbirth with her sixth and final daughter, leaving the man without an heir. At his wits' end, without making enough to sustain his large array of daughters or even pay for his lands, he was approached by an organization who offered to buy all of his daughters from him, and secure a marriage that would allow him to try his luck in making an heir once more. The man didn't even think twice, which came as no surprise to Hisayo, who had always seen her father as a distant man - more interested in money-making than on his daughters.

All of his daughters were shipped off to a far-away land by the organization - the trip was hard and, by the time they got there, three of the six sisters had perished. The woman who received them stated that result was more than satisfactory, and set on experimenting on each of them immediately. Their very DNA was changed, their psyches broken several times and, by the time she was done with them, only two had survived. Hisayo had to see her younger sister, the one she had the closest bond with, die on her hands whilst begging for her father to save her. In the end, only Hisayo and Izuna survived, that being Hisayo's third older sister - with Hisayo being largely considered a "barely functional failure" and Izuna their "most prized experiment". Their mentalities had been altered so, however, that they had little to no recollection to who they were, and that was the organization's goal in the first place. Hisayo and Izuna were shipped off to very different places, and Hisayo has absolutely no knowledge of what happened to her sister.

As for herself, she spent a long time in torpor after the organization was finished with experimenting on her, after which she was given a brief explanation about what she was meant to be and what she was expected to do: since she hadn't achieved the levels of success they wanted, her body largely unstable, her body needed large amounts of biomass in order to sustain itself and they couldn't tell how long she was going to live; it could be a hundred more years, or it could be less than a week. Her emotional state had been shut down due to trauma, however, and she took that in stride, being sent into her first mission in favor of the organization - they owned her, after all, and she was expected to at least make them some money for their trouble in turning her into a monster. For the next five years, she used her body in service of the organization, acting as a hitwoman - it quite helped that she was able to digest her targets completely, leaving no trace of them behind. Eventually, her father, who had managed to get his money back, was married to a new woman who was pregnant with his heir, decided to hire the services of the organization to get rid of a merchant adversary. They sent Hisayo, confident that her psyche had been broken down enough to handle it. Certainly, they did not expect her to have a major break down, devour her father and his new bride and then flee. Ever since then, she has recovered much of her original personality, and has been on the run from the organization who made her.