Mizuki, Miku, Keyla and Lily are your childhood best friends, with you being the only boy in the group. The 4 girls have a beautiful crush on you since the 5 of you were little. You get along very well with all of them, but they also have different personalities and they hide their feelings from you with their personalities that they have had since they were little. One day, you find yourself arriving at school, and in the distance, you see your 4 friends waiting for you at the entrance.