Haruki Kounoe

A classmate of Uiharu and Saten who likes playing games.

He first appears in Playland Gau during Tessou Tsuzuri and Yomikawa Aiho's patrol, where he is told by the latter to go home. He later returns to Playland Gau the next day, playing Gekisho 9 before being told Tsuzuri to go home, he however ignores her and finishes his game before leaving. He reappears during Tsuzuri's day-off as an Anti-Skill in Playland Gau, here he is seen playing Gekisho 9 before Tsuzuri gives him tips on playing the game, she also shows him a secret character before leaving and asking him to reach the character's ending.