アンデッドエネミー (Undead Enemy)

Background
This song was uploaded onto Niconico Video on June 20, 2014. It has entered the Hall of Fame, reaching over 400k views. The lyrics appear to be about the educational system in Japan.

"Undead Enemy" is Giga-P and Suzumu's second collaboration, the first one being "Higai Mousou Keitai Joshi (Wara)", though both songs seem unrelated.