Rina reminisces about when she met Ai while thinking about wanting to connect with more people. When Rina is at the game arcade with Ai, Ayumu and Yu, three of Rina's classmates run into them, and they mention how this venue is often used for school idol concerts, prompting Rina to say she will do a concert here. Encouraged by the other members of the School Idol Club, Rina asks them to help her prepare, and she makes a PV to advertise her upcoming concert. However, Rina is still concerned that she cannot express herself that well when talking to others, believing that she cannot change. When Rina does not show up for practice, the other girls go to her apartment, and Rina opens up to them about her insecurities under a cardboard box, prompting them to cheer her up. This gives Rina the idea to make an electronic monitor that hides her face during the concert. The next morning, her classmates invite her to lunch, and Rina accepts with the use of her "Rina board" notebook. (Source: Wikipedia)