改编自月夜泪创作的同名小说，作品背景设定在一个有魔法，有异族的异世界。只不过这并不是一部穿越男主的故事，而是关于一位少年复仇的故事。
在《剧场版物怪：唐伞》的激烈对决后不久，卖药郎（神谷浩史配音）再次现身，这次他来到了大奥的内庭。先前事件过后，这里正经历一场动荡。出身名门的女子大友牡丹（户松遥配音）接替歌山成为新任总管，并开始推行一种严谨而平衡的领导方式。这种高压政策逐渐加剧了她与曾受天皇（入野自由配音）宠幸的资深花魁富贵（日笠阳子配音）之间的关系日益紧张，两人之间的裂痕日益加深。天皇的妻子有希子皇后（种崎敦美配音）所生的皇子即将选定监护人，一场突如其来的事件却彻底颠覆了富贵的命运。她产下了一个被视为“不祥之子”的婴儿，被年长重臣大友（堀内贤雄配音）视为威胁，从而成为一场权谋阴谋的目标。在男权体制编织的权力之网中，利益冲突与掩盖真相的手段迅速失控。与此同时，奇怪的事件接连发生，人们无故自燃，瞬间化为灰烬。卖药郎怀疑是物怪作祟，展开调查。然而，他所面对的，是一种神秘而不断变化的群体性威胁。这个物怪的真实身份，正是火鼠（日根住配音）之子。他们不仅攻击人类，还似乎在寻找自己的母亲，然而，这位“母亲”始终不肯现身。火鼠为何专门针对那些伤害新生儿之人？又是什么样的悲剧，让她悲痛至极、自焚不止？卖药郎深入大奥之中，揭开层层黑暗，追寻斩除物怪所需的三大要素：“形”、“真”与“理”，誓要揭示真相，平息灾祸。
星元122年―― 在众多企业扩展到宇宙并构筑巨大经济圈的时代， 有一名少女自边境地区·水星转来MS产业的最大企业“贝纳里特集团”旗下所经营的“阿斯提卡西亚高等专门学园”。 她名为苏莱塔·墨丘利。 内心纯真的少女随着胸口鲜红的闪烁亮光逐步迈向新世界。
Blu-ray第一卷收录OVA
Adam's older brother was killed in a car crash a year ago. His family has not been the same since. As his parents struggle to cope with their grief, Adam (10), plagued with guilt over his brother's death feels he is all alone in the world. But everything changes the day he meets Abulele. The Abulele are ancient monsters, bear-sized. Local legends tell that they are extremely dangerous, but in fact, they turn out to be quite friendly and playful creatures. Abulele quickly becomes Adam's best and most secret friend. Together, they outsmart Adam's mean schoolteacher and beat the class bullies. But Adam's parents start to suspect he is harboring a secret, And when a government, Special Forces unit called "Thunder" appears in the neighborhood on a mission to capture Abulele things go from bad to worse. In order to save his best friend, Adam will have to get Abulele back home to its family, and to do so, he will need to put the past behind him and realize that when you truly love someone, ...
故事以史上首个自律人型AI「Vivy」为主角，是以「歌声带给众人幸福」为使命的「歌姬」。某日自称来自100年后的AI「松本（マツモト）」突然出现，并表示自己将与Vivy共同修正历史、避免100年后人类与AI发生战争，使Vivy踏上破坏AI的旅途。
