Game developer KOEI Tecmo Games filed trademarks for “Isekai Musō” (Other World Warriors), “Gakuen Musō” (Academy Warriors), “Tensei Musō” (Reincarnation Warriors), “Musō Play” (Warriors Play), and “Musō Mode” (Warriors Mode) on July 30.
Musō is the series title for KOEI Tecmo Games’ series of hack-and-slash action games, which is titled Warriors in the West.
KOEI Tecmo Games trademarked “Baseball Musō,” “Tennis Musō,” and “Soccer Musō” in January 2018.
Since then, KOEI and KOEI Tecmo have released eight more games in the main series, and numerous spinoffs (including the Samurai Warriors series).