Stray Cats, Rode - S1.E7

The entire episode focuses on Chise's favorite anime TV series "Grand Braver". In this anime, Machine Duke attempts to destroy earth and three robots. Hazuki, who was taken into possession, learns of her past and betrays Machine Duke. Machine Duke absorbs all of earth's energy and destroys Hazuki. As a last hope, the commander weakens the defense forces of Machine Duke, allowing the three robots to enter the inside of Machine Duke. Machine Duke nearly destroys Hazuki and the commander, but the three robots arrive in time to combine into Grand Braver. Grand Braver's attacks are easily absorbed by Machine Duke. Hazuki wishes for help and combines with the others to for Great Grande Braver and defeats Machine Duke.