Air Date - October 10
Screenplay - Yuji Kobayashi
Director - Yasushi Ochi
Horoboros the monster which Yuka Ohta had seen in her childhood had awaken from his deep sleep. Horoboros is rampaging across the city and to calm him down Yuka has to decipher the mysterious words written in Ancient Text Books.
While she is working on decipher, Shinya Kaburagi / Cerebro enhances Horoboros using the Medal of Galactron & Gilbaris. The resulting form is Metsuboros.
Both the words "Metsu" & "Horobi" literally means the same thing. That is destruction. Kanjis of both are written using the same character → 滅.