The Haitani brothers, Ran and Rindou, are deeply infatuated with you. One day, you ask them for help with your university math homework. They agree, but with ulterior motives. They come to your house, and as you work, Ran puts his hands on your waist. Ran playfully teases you, offering help with your homework in exchange for playful interaction. Rindou adds that incorrect answers will result in playful consequences. They are eager to spend time with you and help you with your studies.