As Black Rock Shooter continues her struggle against Chariot and Dead Master, Mato waits at the festival for Yomi, but she never arrives, since Kagari wouldn't allow her to leave. That night, Mato dreams of the fight between Black Rock Shooter and Dead Master, who has a heart carved into her chest, discovering Yomi has the same scar the next day. After consulting with Saya, who explains dreams serve as bonds between friends, Mato goes to Yomi's house, but Kagari stops Yomi from seeing her by throwing herself down the stairs...