This is a personal interpretation but during the ring scene, we can hear a choir song called “Rocking Carol” and I don’t know but the lyrics had some meanings to me.
We will rock you, rock you, rock you
We will serve you all we can
Darling, darling little man
It’s like an echo of their wishes, to cheerish the other and stay together.
Also since the episode was in Viktor’s pov, I see it also like it could be Viktor’s deep desire, to keep “serving” Yuuri until the end ;v;
ALSO DID ANYONE NOTICE THE BELLS STARTED AT THE MOMENT YUURI SLIDES THE RING AT HIS FINGER////////////