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 beloved idol is just too precious!! Sako, who has become classmates and sits next to her favorite idol, Chihiro-chan, is gradually starting to feel a sense of comfort while spending days together as "friends," even though her heart races with excitement. Then comes the surprise spring color sunshine guerrilla live. The overwhelming performance of "Chiro-chan" as an idol, different from the Chihiro-chan she sees in the classroom, brings Sako to tears...! They are supposed to be friends, but it's just too precious to treat her as just a friend!! With school events like the sports festival and after-school picnics lined up, excitement is in the air!