いろいろあってアインズ様とシャドウ様の中身が入れ替わっちゃった！――けど、誰も気づいていない！？主が替わっても別に問題ナシ！
A special (Halloween) episode of the Pure Pure Pleiades. It is a crossover between Overlord and The Eminence In Shadow.
For some reason, Ainz and Shadow have swapped bodies! But... no one has noticed?! Even if the masters have swapped, there's no problem!
