Minamoto no Yorimitsu
Watanabe no Tsuna: Fuuto and Seishun travelled to his time when they touched his sword Higekiri. Tsuna is famous in legend as someone who cut off the arm of a demoness named Ibaraki, but was later deceived to return it after Ibaraki took the form of his nanny requesting to see the arm. In order to amend his wrongs he follows the samurai troop under Minamoto no Yorimitsu into Mount Ooe.