Jirobo was trapped by Sagen and Iga Ninjas; Jirob’s on the verge of death, but he's saved by a bizarre demon-entity. The secret Jirobo is guarding is of that kind of magnitude. It all started further back in time, in 1559, when Nagao Kagetora -eventually called Uesugi Kenshin- and Taehime, the Chief Advisor Konoe Sakahisa’s younger sister, had a small exchange of mutual feelings ...
Who knew, Kanetsugu-dono, 
that you had a vassal like that.
No pensé que los Uesugi 
tendrían un vasallo como ese.
No pensaba que pudieras 
tener un vasallo como ese.
Tu avais de bien étranges serviteurs,
 sire Kanetsugu !
Quem diria que você teria 
um vassalo assim, Kanetsugu!