HKT48 members will appear in AKB48 group's mobile game "AiKaBu" at 1 October 2017, and AiKaBu releases a new promotional video for new update.
AiKaBu is AKB48 group's mobile game which simulate a virtual stock market, each member is a stock representing a fake company on the market. AKB48 group fans are able to support their favorite members by trading their stocks, make them being top companies in market.
Official page: https://aikabu.jp/hkt48
Download free for IOS and Andriod: