A better alternative
Cyborg was okay. The depiction of 'madness' as humorous eccentricities sets the hyperbolic tone of the film. That includes the over-acting.
There is a sweet romance story.
For me, there is a similar romance story and a better movie: the Australian film, Griff the Invisible. It also contains a delusional main character and an admirer who must negotiate those delusions. Of course, the outside world is hostile. It's a lovely, somewhat similar movie. If you like Cyborg, you'll probably like Griff.