Shortly after the appearance of Kondou Isami's beloved sword Nagasone Kotetsu, an order is issued to sortie at Ikedaya. The team members selected include swords related to the Shinsengumi, along with Sakamoto Ryouma's beloved sword, Mutsunokami Yoshiyuki. As the captain, Yamatonokami Yasusada wants to take revenge for what happened at the last Ikedaya battle and vows to annihilate the History Retrograde Army forces.