Actor Ryutaro Okada who plays Isamu Fuwa / Kamen Rider Vulcan was already an YouTuber. He started it as a hobby a year ago during the summer holidays. Through out the year he was doing Gaming videos which also includes PS4 Spider-Man till last 4 months.
Just days before the First Episode of Kamen Rider Zero-One, Ryutaro had posted a video where he is seen singing What do i know? by Ed Sheeran. He is going to come up with more singing videos soon.