在某個時間點的日本，突然出現了文學書全部被染黑的怪異現象。這是由書中帶著負面情緒誕生的「侵蝕者」所導致的災難。被侵蝕的文學書，會逐漸地從人們記憶中消失，最後變得像是一開始便不曾存在一樣。 於是有特殊能力的「鍊金術師」們作為特務司書被派遣至圖書館，為了對抗破壞書中世界的「侵蝕者」，也為了守護文學，於是與轉世的文豪們一起進行戰鬥。
在某個時間點的日本，突然出現了文學書全部被染黑的怪異現象。這是由書中帶著負面情緒誕生的「侵蝕者」所導致的災難。被侵蝕的文學書，會逐漸地從人們記憶中消失，最後變得像是一開始便不曾存在一樣。 於是有特殊能力的「鍊金術師」們作為特務司書被派遣至圖書館，為了對抗破壞書中世界的「侵蝕者」，也為了守護文學，於是與轉世的文豪們一起進行戰鬥。
Producer (English version)
Theme Song Performance (ED)
Producer
Key Animation (ED)
Planning
Color Design
Music
Producer
Key Animation (OP)
Character Design, Chief Animation Director, Animation Director (OP, ED)
Key Animation (ED)
Sound Director
Key Animation (OP)
Planning
Producer
Producer (Animation Producer)
Key Animation (OP)
Key Animation (OP)
Key Animation (OP, ED)
Casting Director
Assistant Producer (English version)
Art Director
Planning
Planning
Producer
Planning
Producer
Character Design (Sub Character Design)
Theme Song Performance (OP)
Director
Background Art (Art Design)
Storyboard (ep 9), Episode Director (ep 9)
Producer
Planning
Planning
Storyboard (eps 3, 6, 8, 11), Episode Director (eps 3, 6, 11), Assistant Director
Editing
Key Animation (ED)
Script, Series Composition
Amamiya is kawaii!
完結散花～～好看！