雛逃げ (Hina Nige)

Background
Your white face resembles that of my vanished beloved sister

Miku is princess in an unhappy marriage. She started harboring affections for her sister-in-law (Nana) but she eventually had to leave. Some time later Miku got a hand maiden (GUMI) who reminded her of her sister-in-law and she began forcing her repressed sexual lust on the girl. The hand maiden tries over and over again to escape, but is always brought back.