けいちゃん

Kei-chan’s Secret Base is the official fan club for Kei-chan, offering a smartphone-only membership site for fans of the freestyle pianist. For a monthly fee of 440 yen, members can access exclusive content and opportunities centered on Kei-chan’s music and activities.

The club provides advance ticket access for live performances and events, along with a gallery of concert images, behind-the-scenes moments, and other photos and videos unavailable elsewhere. Members can also use the Meeting Room to share thoughts on songs and shows or post messages of support. In “Kei-chan’s Freestyle ___,” Kei-chan takes on a variety of challenges in a freestyle format, while the Private Room invites members to submit questions about music or Kei-chan and receive answers. Birthday messages are also sent to members on their birthdays.

The service is available on smartphones running iOS or Android and accepts several payment methods, including credit cards, carrier billing, convenience-store payment, and bank transfer through Pay-easy.