Overlord: Ple Ple Pleiades

Ainz accidentally uses the magical item Total Maniac on himself and is horrified to discover that it restores the emotions his undead body normally suppresses. Suddenly capable of panic, embarrassment, and agitation, he has to keep his usual dignity while pretending that nothing is wrong.

That task becomes much harder when the Pleiades battle maids arrive awaiting orders. Their quirks, misunderstandings, and unwavering loyalty repeatedly push Ainz's newly uncontrolled emotions to the limit, turning life in Nazarick into a battle against the one enemy the Overlord is least prepared to face: his own reactions.