A dazzling smile that sparkles too brightly, a singing voice that resonates boldly in a spacious venue, and the heroic figure dashing through a sea of colorful penlights—my favorite idol is just too precious!! Finally, the first summer vacation as a high school student has arrived. This summer is packed with Spring Shans events, and it feels like it’s going to be the best summer ever…! However, at the summer festival where Spring Shan is performing, Sakiko encounters her classmate Kazumi, who previously mocked Chihiro! Fans vs. Anti-fans (?!), what will happen?! Moreover, during the summer vacation, there will be a Spring Shan one-man live, a summer festival, and Maaya's birthday, filled with fun events! It’s an exciting and hot fourth volume!!