June: This Citadel Is Joyous, Isn't It?

刀剣乱舞-花丸- E6: Yamatonokami Yasusada and Kashuu Kiyomitsu are preparing to go on an expedition in Edo. However, just before they leave their master falls ill. On their trip, the group heads into the mountains to collect medicinal herbs that can relieve a fever.