PLE PLE PLEIADES × KAGE-JITSU!

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) — Description from AniList community (anilist.co).