My father.
From his point of view, he has a disease in this strange country that speaks an alien language that he doesn't understand.
He basically relies on me for literally everything.
Once I've ctb, he has no help at all. I helped him set up his medical aid, I helped him learn to understand how to react when a cop is trying to fuck him over for being Russian, I even helped him learn to mime what he wants to say to some extent to make him a bit more independent.
Once I'm gone? Yeah, my lessons might stay, but there will be no help in the future, and considering how politicians just love reforming the medical aid every ten minutes here, that means he'd be fucked within the hour.