Kamen Rider Build NEW WORLD: Kamen Rider Grease

ビルド NEW WORLD 仮面ライダーグリス

Also known as Kamen Raidā Birudo Nyū Warudo Kamen Raidā Gurisu, 假面骑士创骑 新世界 假面骑士格里斯, 假面骑士Build 外传 假面骑士Grease

“Kamen Rider Build's final chapter — Fierce battle! Fury! Groundbreaking! This is the power of Kamen Riders!”

Deputy Officer of the United Nations Alliance, Simon Marcus, who aims to conquer the world with the terrorist organization Downfall along with the mad scientist Keiji Uraga, attack the Kamen Riders with overwhelming strength. It is only on Kamen Rider Grease that the enemy's abilities did not work. In order to defeat this new enemy and rescue Misora, Kazumi Sawatari must create a new item ... but it is told that it requires the life of his friends, the Three Crows. The ultimate decision must be made.