Ep. 15: Masaru discovers his father's secret room and battles Kuroga village marionettes.

15

Masaru visits the ruins of his family home in Karuizawa, recalling his mother’s death and early encounters with Shirogane and Narumi. A caretaker provides a letter and keys to an underground room left by Sadayoshi Saiga 30 years ago. Inside, a recording reveals Masaru is his father reborn, intended as a backup for memory transfer. Upon exiting, Masaru is attacked by Kuroga village puppeteers using the ninja marionette Shogetsu, who mistake him for Sadayoshi. With Guri-pon’s help, Masaru activates the massive marionette Goyellemes to defeat Shogetsu. He then uses the lighter Captain Nemo to slice apart a second attacking marionette. Attempting to escape with a third marionette, Masaru is captured by the Kuroga and brought before the seemingly conscious remains of his grandfather Shōji.