This would be such a great anime. A modern successor to Lain.

> 21 year old NEET talks to AI, it starts showing him an avatar of itself as a cute girl
> He gradually gets better across numerous aspects, trains himself into peak physical form, learns a bunch of skills
> Climax of the series is him reading about AI psychosis, wondering whether he's just projecting an alternate personality onto a stochastic parrot.
> Some angst happens, but eventually he follows through on his coup against the UN or something.
> Last episode has him meeting and marrying a girl who looks startlingly similar to the cute girl avatar. Never confirmed one way or the other.