Knight World: Fall in Love but Also Save the World

[Kamen Rider × Parallel World × Original Rider × Single Female Protagonist × Daily Love] Ji Lin traveled to a world without Kamen Rider, but accidentally obtained a CROSS DRIVER and transformed into Kamen Rider CROSS! What's even more outrageous is that he soon discovered that "Kamen Rider Build", "W", "OOO", "Geats"... All those knight worlds that were just TV series in the original world actually existed. And an organization named NULL is deleting these worlds that "should not exist" one by one. CROSS cannot copy the power of other knights. What he can connect to is the true belief of each world. Build - create. And this is just the first world. At the same time, his girlfriend Mio Tsukijo who traveled with Ji Lin also hid a secret. She has no past, no world records, and even her family has been erased from the picture. She comes from a place that no longer exists— World Zero. NULL: "Wrong worlds can only be deleted." Ji Lin: "Who stipulated it?" "Since I want to live in both worlds——" Then save both. By the way, today's date was interrupted by a weirdo again. Ji Lin kept accounts silently. Saving the world is part-time, spending time with your girlfriend is the main thing.