Sono Hanabira ni Kuchizuke o is an adult visual novel and the first game in the Sono Hanabira ni Kuchizuke o series of games. The game follows Nanami Oda, who is a new freshman in high school. However on the first day, she ends up in an accident in which a senior student from the school comes to her rescue. Ever since that meeting with Yuna Matsubara, Nanami just cannot get her mind off of her and later decides to join the student council.