"Glucagon" is a song by EZFG featuring Megurine Luka. It is a fast-paced techno song using Luka V2's English database for the main vocal, while the chorus also uses Luka V4X's Japanese and English voicebanks. While the title refers to a hormone, the lyrics are vague and therefore open to interpretation. The video was created by positioning recordings of particles. This song is featured on EZFG's single with the same name.