绯色圆舞曲 (Fēi Sè Yuánwǔqǔ)

Scarlet-Coloured Waltz is a song sung by Tianyi Luo and Ling Yuezheng. It is the two-hundred-and-twenty-seventh track and the two-hundred-and-twenty-eighth track in Other Vocaloid Songs 68: Making A Comeback Volume 16.