Mutsu enmei-ryu is an unarmed style that allows the user to defeat any number of armed opponents using incredible speed and strength. Shura no Toki tells about some Mutsu generation and their important role in history.
1st arc: Yakumo Mutsu (Musashi Miyamoto era) - Vol1
2nd: Izumi Mutsu (Ryoma Sakamoto era) - Vol 2 & 3
3rd: Azuma Mutsu (Izumi's younger brother) -Vol 4
4th: Takato Mutsu (Tokugawa era) - Vol 5 & 6
5th: Kiichi Mutsu (Yoshitsune Minamoto era) -Vol 7, 8, 9 and 10 (elex edition)
6th: Tatsumi Mutsu, Komahiko and Torahiko (Oda Nobunaga Arc) - Vol11,12,13
7th: Tenpei Mutsu (Shiro Saigon Arc) - Vol14
8th: Sakon Mutsu (Raiden Tameemon Arc) - Vol 15
Note for anime arcs:
yakumo's story: ep 1-7
takato's story: ep 8-14
Izumi's story: ep 15-26