故事以一個被高牆所包圍的世界為故事舞台，描述失憶的男主角「BACK ARROW」，僅僅記得他是來自於牆外的世界。因此他而為了尋回記憶朝著牆外邁進，卻也因此捲入紛爭之中。
故事以一個被高牆所包圍的世界為故事舞台，描述失憶的男主角「BACK ARROW」，僅僅記得他是來自於牆外的世界。因此他而為了尋回記憶朝著牆外邁進，卻也因此捲入紛爭之中。
Director, Original Creator
Original Character Design
Storyboard (ep 17, 21)
Storyboard
Animation Director (eps 1, 3, 7, 10, 16, 20, 24)
Character Design, Chief Animation Director
ADR Director ((Assistant))
Background Art (Studio Wyeth)
Theme Song Performance (ED)
ADR Director ((Assistant))
Producer (English version)
Mechanical Design
Producer (Creative Producer)
Animation Director (ep 22)
Planning
Animation Director (eps 2, 4, 6, 8)
Storyboard (ep 22)
Animation Director (eps 2, 4, 6, 8, 13, 15, 19, 21)
Animation Director (eps 13, 15, 17, 19, 21)
Animation Director (eps 4, 8, 11)
Episode Director (eps 2, 6, 13)
Animation Director (eps 8, 11, 17, 19)
Key Animation (Madhouse)
Theme Song Arrangement (ED1)
Background Art (Studio Wyeth)
Storyboard (eps 4, 6, 8, 13, 15, 19, 23)
Episode Director (ep 18)
Background Art (Studio Wyeth)
Background Art (Studio Wyeth)
Background Art (Studio Wyeth)
2nd Key Animation (eps 14, 15, 22), Key Animation (eps 1, 3, 5, 7, 9, 10, 14, 16, 18, 20, 23, 24, ED1)
2nd Key Animation (eps 14, 18), Key Animation (eps 5, 14)
Key Animation (ep 12)
Planning
Theme Song Performance (OP2)
ADR Director
Theme Song Performance (OP)
Sound Director
Animation Director (eps 9, 14, 18)
Episode Director (ep 22)
Assistant Producer (English version)
Producer
Planning
Producer
Planning
Producer
Animation Director (ep 12)
Animation Director (ep 22)
Animation Director (eps 20, 23-24)
Animation Director (ep 12)
Color Design
Music
Theme Song Performance (ED2)
Storyboard (ep 11), Episode Director (eps 1, 5), Key Animation (OP2, ep 5)
Script, Original Creator, Series Composition
Producer
Episode Director (ep 12)
Animation Director (eps 8, 11, 15, 17, 21)
Animation Director (eps 11, 17)
Key Animation (ep 12)
Animation Director (eps 2, 4, 6, 19, 21)
Animation Director (Action Animation Director)
Producer (Animation Producer)
Animation Director (ep 22)
Theme Song Composition (OP1)
Animation Director (ep 12)
Animation Director (eps 3, 7, 20, 23-24)
Editing
Key Animation (ep 12)
Amamiya is kawaii!
完結散花～～好看！