在世代交換之時，據說會有一個造成世間動亂的「霸者之首」。這個東西從秦代以來流傳下來，並且讓想要爭奪霸權的人們不停爭鬥著。 時間來到了動亂的幕末。位於正在吹起異國風潮的橫濱之地，出現一個劍士。他的名字叫作秋月耀次郎。手上握有靈劍「月淚刀」，也是以封印霸者之首為使命而被叫作「永遠的刺客」的人。過去他曾擔任坂本龍馬的保鑣，但對於未能拯救他而感到深深懊悔的秋月，為了治癒心傷而一個人尋找在幕末蘇醒的「霸者之首」。 他在一場爭鬥中因為救了一對孩子，而和以「報仇」為目的而到處旅行的劇團一座相遇。一座的仇敵－中居屋重兵衛正握有「霸者之首」。於是為了找到首級的耀次郎和劇團們因此捲入了陰謀的漩渦之中。
在世代交換之時，據說會有一個造成世間動亂的「霸者之首」。這個東西從秦代以來流傳下來，並且讓想要爭奪霸權的人們不停爭鬥著。 時間來到了動亂的幕末。位於正在吹起異國風潮的橫濱之地，出現一個劍士。他的名字叫作秋月耀次郎。手上握有靈劍「月淚刀」，也是以封印霸者之首為使命而被叫作「永遠的刺客」的人。過去他曾擔任坂本龍馬的保鑣，但對於未能拯救他而感到深深懊悔的秋月，為了治癒心傷而一個人尋找在幕末蘇醒的「霸者之首」。 他在一場爭鬥中因為救了一對孩子，而和以「報仇」為目的而到處旅行的劇團一座相遇。一座的仇敵－中居屋重兵衛正握有「霸者之首」。於是為了找到首級的耀次郎和劇團們因此捲入了陰謀的漩渦之中。
Key Animation (eps 3, 15, 20-21, 24-26)
Key Animation (eps 2, 4-5, 8, 10, 13-14, 18-20, 24-26)
Key Animation (eps 3-4)
Key Animation (eps 13, 15)
Background Art (eps 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24)
In-Between Animation (ep 19)
Key Animation (ep 20)
Key Animation (eps 10, 15)
Episode Director (eps 4, 10, 18, 24)
Key Animation (ep 13)
Background Art (ep 26)
Background Art (ep 26)
Key Animation (ep 14)
Key Animation (ep 13,20)
Key Animation (eps 1-2, 4, 10, 15, 19)
Key Animation (ep 18)
Key Animation (ep 18)
Director of Photography
Key Animation (ep 1)
Production Manager
Animation Director (eps 2, 13, 20, 25), Key Animation (eps 1, 8, 10, 13, 20, 25-26), Assistant Animation Director (ep 26)
Key Animation (ep 2)
2nd Key Animation (ep 9), Key Animation (ep 1, 4-5, 10, 14, 19, 24, 26)
Theme Song Performance ((OP))
Storyboard (eps 7-8, 11)
Key Animation (eps 7,11)
Inserted Song Performance (ep. 19)
Director, Creator
Storyboard (ep 9, 10)
Executive Producer (English version)
Key Animation
Animation Director (OP, ep 1, 10, 19, 26), Key Animation (ep 18)
Theme Song Composition (FictionJunction YUUKA)
Original Creator
ADR Director
Character Design
Theme Song Performance
Background Art
Background Art (eps 19, 21, 23, 25-26)
Script (eps 16-18, 23)
Animation Director (eps 12, 21), Key Animation (eps 1-2, 5, 12, 18-19, 21, 25-26, OP), Assistant Animation Director (ep 1)
Key Animation (eps 2, 5, 14)
Storyboard (ep 4), Animation Director (ep 4-5), Key Animation (OP, ep 1-2, 4, 10, 12, 14), Assistant Animation Director (ep 14, 23)
Planning
Art Director
Key Animation (ep 8, 21, 23, 24, 26)
Background Art (eps 8, 10, 12, 14, 16, 18, 20, 22, 24, 26)
Sound Director
Key Animation (ep 18)
Storyboard (ep 21), Episode Director (eps 8, 15, 21, 25)
Editing
Key Animation (eps 13-14, 18, 24-25)
Key Animation (eps 10, 14, 19)
Episode Director (eps 2, 5, 12, 19)
Animation Director (eps 5, 15), Key Animation (eps 1, 5, 13, 25)
Episode Director (eps 3, 23)
Key Animation (ep 2)
Key Animation (eps 1-2, 5, 8, 10, 13, 15, 20-21, 24-26, OP)
Episode Director (eps 13, 20), Key Animation (eps 10, 19, 25, OP), Assistant Animation Director (ep 26)
In-Between Animation (eps 6, 9, 12)
Key Animation (ep 8)
Key Animation (ep 3)
Storyboard (ep 14), Episode Director (eps 1, 14)
2nd Key Animation (ep 1)
Key Animation (eps 3, 5, 10, 14, 19, 24, 26)
Script (eps 1-14, 19-20, 22, 24-26)
Key Animation (eps 8, 14, 19, 24)
Animation Director (eps 9, 18, 24), Key Animation (eps 3, 6, 9, 12, 18, 21, 24)
Key Animation (ep 12)
Key Animation (eps 10, 13, 15, 20)
Storyboard (eps 15, 18, 20, 24)
Storyboard (eps 3, 22), Animation Director (eps 3, 8, 22), Key Animation (OP, eps 1, 8, 13, 25, 20-21, 25-26), Assistant Animation Director (ep 17)
Key Animation (ep 13)
Color Design
Screenplay (ep 15, 21)
Episode Director (eps 9, 17), Key Animation (ep 9)
Director
Key Animation (eps 2, 5, 10, 13, 15, 20, 24, 26, OP)
Key Animation
2nd Key Animation (eps 24-26), Key Animation (eps 4, 8, 10, 13, 15, 18-19)
Planning
Music
Amamiya is kawaii!
完結散花～～好看！