Engine Sentai Go-Onger - The 0 Go-Onger

Yuzuki Sasaki is looking for her old friend after learning that he's a Go-Onger. Deciding to pinch in to help the team, she becomes like a big sister of the team while being an unofficial Go-Onger. Unknown to them, Yuzuki has found an Engine Soul that belongs to another Engine named Nighta. But... why is there a numbe...