Soburin’s human nobility are not the only rulers that are in need of outside agents since the corrupting fogs reappeared; even oni warlords have found the Mists of Akuma to bring challenges, obstacles, and threats beyond their ken. Yona, the undisputed master of the secret city of Tsukisasu, lost control of her throne only a few weeks ago to a strange creature that capered out of a storm intermingled with the supernatural haze, and her agent Xiqzoxix is keen to remove the usurper as soon as possible. The PCs are the group ze has chosen for this momentous task and should they accept the oni bengoshi’s offer, a deadly set of trials await them on top of the mountain—though the longer they dally, the more powerful their adversary grows. To defeat Obiemashita the party will have to first find Tsukisasu, covertly investigate the town, and then disrupt the yai sovereign of storm’s rituals and slay it before all hell breaks loose, spilling untold violence down onto the already embattled lands of the prefectures below! Will you conquer Tsukisasu or be subsumed by the storm? In The Yai Sovereign of Storms you’ll find… A monstrous adventure set in Mists of Akuma, an eastern fantasy noir steampunk campaign setting for the latest edition of the world's most popular roleplaying game The secret monstrous city of Tsukisasu and a collection of its oni citizens 2 maps by cartographer Mike Myler: the hidden settlement of Tsukisasu as well as Yona’s Fortress The Mists of Akuma themselves and the new misted condition 2 new attributes to posit the unique aspects of the campaign setting in the minds of your players: Dignity and Haitoku The adeddo-oni template and 10 new monsters: adeddo-oni hunchlings, adeddo-oni samurai, adeddo-oni ninja, gaki, hebikontorra, monsuthant, tikbalang, Xiqzoxix the oni bengoshi, the Katana of Rizushi Kantaro, and the Yai Sovereign of Storms Obiemashita