A sex research circle that exists at a certain university. The only female club member is the cutest girl in the biology club. Working seriously every day! Her task is to apply all sorts of stimuli to the male genitals and verify them. She is willing to dedicate her own loli body. The most important part is provided with super close-up materials. Challenge various transformation positions and continuous forced climaxes, touch human sexual instincts under abnormal large orgies, and reach the abyss of pleasure!
