舞台『刀剣乱舞』外伝 此の夜らの小田原

One day, Kunihiro Yamabagiri, Heshikiri Hasebe, ordered by the Lord to investigate, Realize that they have arrived at the destination. There is Odawara before the Odawara conquest. Kunihiro Yamabagiri will help a man attacked by a herd of wild dogs. The man's name is Akiyoshi Fujiwara. At the order of Mr. Nagao Ashikaga and Mr. Kencho Nagao, he was an apprentice of a swordsmith who beat Kunihiro Yamabakiri. Why did Kunihiro Yamaubagiri arrive in this era?