As Mato prepares to go to training camp with her basketball club, Yomi starts to become jealous of Mato's childhood friend, Yuu Kotari. Mato has more dreams involving Black Gold Saw during camp, and at the same time, Saya takes an interest in Yomi. Upon returning to school, the basketball coach, Arata Kohata, discovers a love letter she wrote for a boy she liked had been posted for all to see. Although she holds back tears in front of the crowd, she comes to realise those laughing behind her back when she is taunted by Saya. In the other world, Black Rock Shooter attacks Black Gold Saw's hideout, killing her minions, one of which resemble Arata. Simultaneously in the human word, Arata experiences a sudden pain in her head and falls unconscious in front of Mato.