ぷれぷれぷれあです × かげじつ!
For various reasons, Mr. Ainz and Shadow-sama have swapped bodies!
--But no one has noticed!
It doesn't matter if the master has switched!
"Overlord" and "Kage no Jitsuryokusha ni Naritakute!" Halloween collaboration of two anime series with chibi characters!
(Source: YouTube Description, Translated)