A light in the sky. A body falling. A kiss. Unimaginable power is awakened, and with it a series of events will unfold that will change Great Japan forever.

Muneakira, Yukimura, and Matabei are apprehended by Sen, and are awaiting their punishment. Meanwhile, Jubei lies dormant, but only temporarily, and everyone is shocked at what happens when she wakes up.

Sen must figure out what to do about the "girl who fell from the sky."

The power is up for grabs! Yukimura theorizes that Muneakira will turn whomever he kisses into a Master Samurai, and thus the game begins. While she bones up on technique, Sen and Hanzo lie in wait, ready to stop her no matter what!

With suspicions that his sister is harboring Yukimura, Sen's older brother sends in a spy to discover the truth. Meanwhile, at the dojo, a new enemy appears, and she seems to have a long time grudge on Yukimura...

Sen and Muneakira need answers. A secret operation suddenly turns into a group outing, and in order to infiltrate the Tokugawa database they must both keep it secret form the others. Meanwhile, Yoshihiko's personal assassin has plans of her own, and her job is clear: eliminate Muneakira at all costs!