In Elementary, Ayano Aishi or Yandere-chan and Taro Yamada, who she often refer to as "Senpai", were really great friends. Best of friends. They both have sparks flying, but when Ayano needs to move to America, all her contact with Taro vanished. Now in high school, Taro reunited with her, restoring their happiness. But when she finds out about the crushes on Taro....she stops them.