Ojanko High School is a "strip mahjong" game in which the player battles six high school girls, three odd-looking men, and Soh Takeko, who will later appear as a major boss in Sonic Wings 3. The game also features several characters from Rabio Lepus: Kotomi Kitashirakawa as Kitayama Fuyumi, Komomo Kitashirakawa as Takano Izumi, and Taro Kitashirakawa as the high school's principal.