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 number 0 on it? And why is only the Engine Soul is found? Yuzuki will find out during her stay in Japan... REST OF CHAPTERS WILL BE POSTED ON MY AO3 ACCOUNT (It was only posted on here and DeviantART and one chapter on Pinterest. Maaaybe on my Patreon) (Shutdown NovelHD or NovelWW😡)