Kaiba. It’s anime, but if you like conceptual sci-fi fantasy about the nature of the self and memory then this would probably be up your alley.

It takes place in a world where it’s possible to transfer your mind to a new body and sell memories, and it explores the obvious implications of that under capitalism. It’s a mix of dark (but not grimdark) and hopeful; it doesn’t spoon-feed you and is comfortable leaving you with existential questions. I’ve watched it twice and got something new out of it the second time around, and honestly I’d watch it a third time.