Deathmatcher said: Either I am way too dumb to find any cleverness in this or maybe there isn't any fro mthe start.
Dial is evolved from Latin rota dialis, meaning clock (literal translation: daily wheel.) A pocketwatch is a type of clock. Luna Child on a clock = Luna Dial. Luna Dial = Sakuya's theme.
It's a bit of a stretch and not mentioned by the artist at all but definitely makes sense.