絡繰師と碧 (Karakurishi to Midori)

Background
One day the vow the came out of your mouth, will fade away.

A puppeteer preforms with his doll "Veldea" for children. It's implied that Veldea was made to replace the deceased lover of the puppeteer.

This song is connected to Darker Halloween YumYummyGillia, where the duo returns.