The question is whether it's Remilia's new year's resolution to do a better job at pleasing her servant, or Sakuya's new year's resolution to do a better job at faking it.
What, you expected Sakuya's "lessons" not to work? Masara's Saku is too on-the-ball for that. Only real question is how many times she had to show Remilia how it's done.
That's quick...
One more time.I'm not feeling it.
Mh...Fufu...
Tonight, I'm not gonna let you sleep.
I'm going to please you!My, how rare, it's feeling good, Sakuya?