Monotone Kumiko. She loves black and white. Her clothes are usually black and white, and her belongings are often black and white as well. Her underwear is vivid pink, but... There's a reason why she loves black and white so much. She loves the piano. She learned piano from a young age and grew up with the grand piano in her parents' home. Her mother always told her she might grow up to be a pianist, but Kumiko had no desire to become one. She loves the piano, but she didn't particularly like playing it. Its black, shiny, large, hard body, the beautiful sounds it produced when struck. She liked its appearance and its qualities. She couldn't play it well, so she didn't like playing it, but she was happy just being around it. She believed that the piano would never betray anyone. But one day, something happened. It was when Kumiko was in sixth grade, and her friends were excitedly talking about their crushes. Her friends would say things like, "I love you!" and "I'm definitely going to marry you!" Kumiko's soulmate was her family's grand piano. She had no other loves and was convinced without a doubt that she would marry the piano. When her friends asked, "Who does Kumiko love?" she told them, and they all responded, "Kumiko, what do you mean?" and "You can't marry a piano!" Kumiko realized that falling in love with a piano wasn't normal. It was the first time the piano betrayed her. Since then, she stopped learning and stopped sleeping under the piano. Since then, she's fallen in love with normal people. Though she still collects black and white things, Kumiko has fallen in love with normal people and experienced normal sex. Perhaps it's because of its appearance or nature. Having just broken up with her boyfriend, Kumiko accepted an invitation to film an adult video for the simple reason of wanting to touch and admire a penis. The penis hasn't betrayed her yet.