Vanished! Giant Castle Susanoo!

"Toshi...!" Kondo and Okita try to help free their beloved friend from the evil spell of the chronometer. However, Mori Ranmaru appears and arrests both Kondo and Okita, throwing them in a cell for treason. At the same time, Takasugi and the others sneak into the giant castle Susanoo in order to free the emperor, but come across a hidden surprise. Ryoma has also come to the castle seeking revenge for his fallen friend, Izo and to retrieve the chronometer. As things come to a head, Katsura finally admits to Takasugi the reason he has been secretly looking for the chronometer alone.