MKON-077 - The proud genius female shogi player gets broken by her teacher and becomes a semen-addicted sex slave

My girlfriend, Mao Watanabe, is a genius female shogi player from a prestigious family. She looked down on everyone until she was utterly defeated by her club advisor, Mr. Takamizawa. With her pride wounded, she demands a rematch, but he tells her to come to his house at night. Mao, don't go! You're going to get ruined!