Sexaroid Mayumi 性奴人形マユミ

Kisaragi Mayumi is a 20 year old model and She is also the sex slave of a monster called a mutant. The monster violates her every night, remodels her body and even uses her internal organs as its toys. Even so she loves the mutant, to the point that she intends to attain an immortal body so she won't die even if the monster dissects her.