Anna and the others enter a bookstore in the shopping arcade in pursuit of a Makoto Jewel. As they work to deduce the whereabouts of the shopkeeper's stolen gold medal, a conversation with a high school girl named Haruna Makifusa, who happened to stop by, provides them with a valuable hint.

Usonoir and Nijee steal Makopyon, a mascot suit for the shopping arcade with a Makoto Jewel inside, and run away from Anna and the others. Then, they disguise themselves as customers and duck into Patisserie ChuChu to wait until the heat is off.

Anna, Mikuru, and Luluka head out for the day, leaving Kurea at the quiet CUREtto Detective Agency to ruminate about why she has the power of the Forgotten Race. Then, a client comes in with a calling card she got from the Phantom Thieves' Guild.