S1·E5 A Monster of the Imagination

Kotoko happens to spot a man fighting with Steel Lady Nanase. She gets closer and realizes that it was actually Kuro that was struggling in this battle. Saki then also joins in and after talking with her, Kotoko remembers the story about Kuro when he was younger that he told her about. Kotoko realizes they will need a special method to defeat Steel Lady Nanase because she is not an ordinary spectre...