That's Bed Chan, you can find her in the will side of the will/power temple, she is the bed you sleep in to regain your strength.
Holy shit, i always thought the bed would cause an instant defeat if overused, i've been playing this game since before we had a labyrinht ffs
It is a defeat but then you unlock more options and different dialogue when going to the pink bed with snow girl
You dont even need to sleep in her, just beat Aniko, and go through her dialog to unlock Bed chan, and get some different dialog.
