Well here's a bit of a surprise. Kamen Rider: Climax Scramble Zi-O is going to see an English release in Southeast Asia, where the game will be called Kamen Rider: Climax Scramble Zi-O. The game will retain the Japanese voiceover, but will include English subtitles. No release date was revealed, but the following English blurb was shared.
Kamen Rider: Climax Scramble will feature 31 different riders, from the first Heisei rider “Kuuga” to the latest Kamen Rider in Japan. It will guarantee to be a fun-filled action battle! A unique feature of the Nintendo Switch, players are able to share the Joy-Con™ with friends and family as a 2-player team, or face off 1-on-1. With many play options, enjoy the game solo or together with others. Children and adults are sure to have fun too!