Battle of Hakodate
Unable to stop Horikawa, Izuminokami Kanesada stands there as he walks away. As Izuminokami agonizes over his inability to deny Horikawa’s determination, Saniwa appears in front of him.

In order to resolve the regret Izuminokami holds in his heart, Saniwa suggests for them to head to Hakodate – the land where Izuminokami and Horikawa's former master, Toshizou Hijikata drew his last breath. The Time Retrograde Army shows up in Hakodate. With the reinforcement of Yamanbagiri and his unit, Izuminokami will face the Time Retrograde Army and his own regret head on.