A sex research club exists at a certain university. The sole female member is the cutest girl in the biology department. She's diligently active every day! Her task is to apply various stimuli to male genitalia for verification. She doesn't hesitate to offer her own loli body. She provides materials with extreme close-ups of the most important part. She challenges various perverted positions and continuous forced orgasms, touching human sexual instincts in an abnormal orgy, reaching the abyss of pleasure!
