Also known as: 仮面ライダー_令和_ザ・ファースト・ジェネレーション
Kamen Rider Reiwa: The First Generation is a 2019 Japanese superhero film in the Movie War line of the Kamen Rider Series. It serves as a crossover between the television series Kamen Rider Zero-One and Kamen Rider Zi-O and is the fourth film of the Generations series.