After Kaede is abducted by the Chain Witch, Iroha is introduced to the group's coordinator, Yakumo Mitama, finding that Yachiyo is also a part of the team. Managing to convince Yachiyo to help them, the girls write their names on the Friendship Ending Staircase, with Rena's honest feelings towards Kaede luring out the Chain Witch. As Rena reunites with Kaede in the labyrinth and makes up with her, Iroha once again spots the Small Kyubey, which leads the girls to the Witch's weak point. After defeating it, Yachiyo suspects that what they faced was not a Witch, but something else entirely...