(バトルガール ハイスクール Batorugāru Haisukūru) is a Japanese social network game released by COLOPL. An anime adaptation was green-lit, to celebrate the one year anniversary of the game. The anime adaptation, which was later revealed to be a television series, aired in Japan from July 2 to September 17, 2017.The story is set in the future of year 2045.Sadone is a female character in Battle Girl High School. She was an antagonist during the first game arc until being abandoned by Evina (Evil Erika), when the Hoshimori class took her in out of pity. She then joined the first year class of the Hoshimori at Shinjugamine.