[六畳の部屋] [EF] Instead of ice powers, Elsa has tentacle-demon abilities and can sprout flexible limbs. Her human half eats normal food but her monster half needs sexual energy for sustenance. This isn't a problem until teenaged Anna starts exploring herself in the other bed and Elsa desperately tries to hold back her tentacle half from reaching over and taking what it wants... [SCHMUT/NSFW]