So-min's Heart-Throbbing Heartbreak.So-min learns that Yun-su is in love with Aira. Mia encourages So-min to confess to him, and they do so with a Prism Show, performing the Prism Act "Exciting Heartbeat Memorial." After learning Don Bomby brought up the Road to Symphonia to Kyoko, Jun investigates to find out his identity is fake. While Aira must chose between Sho and Yun-su's designs for MARs' outfits for the Crystal High Heel Cup, Don Bomby approaches her and brainwashes her with his design...