The Scientific Proof of Love. Volume 6

The time of the summer science camp has come to an end! It was a bright trip, but it's time for the scientists to return to the laboratory and finally analyze all the results of the tests conducted. Many obstacles arise on their path to knowledge. This time, Kimuro and Yukimura meet another couple of loving scientists. They will have to compare the level of oxytocin in saliva. Will our heroes be able to compete with other lovers?