The Final Challenge Ayako, the proprietress's mother, has found a way to force Tsubaki to make wagashi to her exact specifications whether he wants to or not. Meanwhile, Nao's due date for her pregnancy draws near, but it doesn't stop her from making sweets for Sanae. Everything comes to a head in a tea party showdown that pits husband against wife for the fate of Kogetsuan. Will Nao and Tsubaki be able to foil Ayako's scheme to control her family?