The research theme of SOD Lab's 10th installment is 'Mutual Licking.' Friend relationships, superior-subordinate relationships... between women who have no interest in the same sex, they become subjects of an experiment despite mutual resistance. With no romantic feelings and not biologically attracted to each other, in a completely flat relationship, which part of the body feels the most when licked? And can they even get aroused from it? Thoroughly verified over two days.
