Hololive Production, Celebrity Mahjong Crossover Launches July 15
COVER Corporation announced a limited-time collaboration between hololive production and the Taiwanese mahjong game Celebrity Mahjong, starting July 15, 2026. The crossover features talents Houshou Marine, Hakui Koyori, and Juufuutei Raden, with in-game events, exclusive outfit sets, a cheering event, card albums, and a merchandise booth at Comic Exhibition in Taipei from July 23 to 26.