Although Ando Momo (played by Mizuki Yamamoto) has the appearance of a bad girl, she is a traditional and innocent girl in her heart. Kashiwagi Sae (played by Mei Nagano) is Momo's childhood sweetheart. Since childhood, as long as it is something that Momo likes, Sae always wants to steal her love. For Sae's domineering and selfishness, the kind-hearted Momo always chooses to tolerate and give in, which makes Sae's behavior more and more crazy. Momo has always silently liked her classmate Tojimori Kazuya (played by Shinkensuke), but she chose to bury this feeling silently in her heart. One is that she feels that Kazuya will never like girls like herself, and the other is that she is afraid that Sae will know her thoughts. Oka Yasu (played by Inoo Kei) is a school grass-level figure who is very popular among girls in the school. Strangely, he is only interested in Momo.