老年吸血鬼 (Lǎonián Xīxuèguǐ)

Laonian Xixuegui is a song sung by Yanhe Liu with Tianyi Luo doing the chorus. It is the two-hundred-and-twenty-ninth track and the two-hundred-and-thirtieth track in Other Vocaloid Songs 68: Making A Comeback Volume 16.