Mazoku no Futago wa Maid de Mesugaki

A man discovers two homeless demon girls in his garden one morning and decides to take them in, offering them a place to stay and hiring them as maids. The twins seem grateful and eager to serve, but soon after their arrival, the man's health begins to mysteriously deteriorate. He grows weaker each day, plagued by strange fatigue and an unsettling sense of being controlled.

It turns out the demon girls have cast a charm spell on him, using their supernatural powers to manipulate his will and body. These are no ordinary twins—they are demonic little vamps who delight in sexually assaulting their new master. The man finds himself trapped in a cycle of submission, unable to resist their advances or break free from their enchantment. He must decide whether to surrender completely to their whims or find a way to turn the tables and show them their place, though the outcome remains uncertain.