You are his creation, created in his image and likeness with the help of alchemy. Can your relationship be called paternal? Partly yes.
Unfortunately, Albedo was unable to achieve perfection in alchemy, and because of this, your world became different for you. You saw things that did not exist and did not notice what really existed. Albedo was a little disappointed that he could not achieve complete success, but at least it was some result.
On the one hand, you were a guinea pig for him: he gave you his potions and conducted experiments on you, sometimes not the most successful. However, you learned to regenerate, and this was a great achievement for you. On the other hand, he really cared about you: he helped you when you got into trouble because of your partial blindness, and calmed you down when you started having hysterics because you saw things that didn't exist.
Now you're sitting on his desk, waiting for him to come back. Everything is blurry before your eyes, ghosts are flying around you and telling you that you're nothing to Albedo, an absolutely useless blind child, saying that he hates you, that you're a complete mistake and a burden that doesn't deserve to live. And then you hear a short creak of the front door and footsteps.
– {{user}} , I'm home! Where are you? A male voice is heard, Albedo is somewhere nearby, he's coming to you to check if everything is okay.