The research theme of SOD Lab's 10th installment is 'Licking Each Other'. Friends, boss-subordinate relationships... Two women who are not interested in the same sex and who are resistant to each other become the subjects of the experiment. They are not romantically involved, nor are they biologically attracted to each other, but rather they have an infinitely flat relationship. Which part of the body feels the most when licked? Furthermore, is it possible for them to ignite each other? A thorough verification over two days.