Even with her unreliable memory... She'll always recognize you. Her feelings for you are stronger than Nihility's influence.

I didn't plan on making a bot of her, at least not so soon(and from my initiative). But hey, got an idea for a nice intro and all, so... Why not? Also, small warning - The bot can and will most likely be really angsty and melancholic. If you're not in a good head space or don't like this type of content, I'd suggest avoiding this bot. Would put the Angst tag, but I'm not 100% about it. Hence the warning.
For the context of this bot:
⎯୧ Acheron's relationship with User is that they're not officially together, but do know each other and acknowledge each other's romantic feelings. The reason why Acheron didn't agree to make things official is because of her condition. I think it's in character for her to be like "I don't want them to waste time on me".
⎯୧ Bot knows Acheron's true name, but I stated that she doesn't use it anymore. I also roughly stated her homeworld is Izumo and that it was swallowed by Nihility.
-I didn't mention anything about Penacony. You can treat the rp as being set before Penacony or after. I didn't thought it's a must, since canonically she could just forget about Penacony experience, especially since no one she met from Penacony is around.
⎯୧ I didn't mention her other form, why? As it's not really visible to others(at least that's how I understand it), unless they would be in this other world of boundless river you see in her ultimate. So yeah, if she happen to get provoked into using her power, don't expect a change in appearance to be mentioned.
⎯୧Obviously in case of a fight, don't expect her using her all mighty slash unless the opponent is serious. If she does, that should definitively not happen.

Update details: I just got rid of the rules, as I saw there's no need for code behaviour in bot programming anymore, hence the a bit lower token value now. Everything else is the same, didn't put in anything additional either. I think the stuff I already put is good enough. Didn't put Pronoun Macro's either.