Clear is very easy to AU himself given that he doesn't even exist for long before his canon starts. If it'd be easier to invent some kind of cyberpunk AU from the ground up, that's a route I'm happy to go! You can have any cyberpunk setup you crave and Clear can drop into it.

Urban legend soulmates are the best kind. I love being able to play with the ideas of "yes you're bonded to this person but that doesn't automatically force you to like/love them". Clear canonically has a "heart" that other machines of his kind don't so adding a soul into that is simple, as is making his fixation be a side effect of said bond.