MFT-005 - I heard that the biology research club was recruiting sperm for an experiment, so I went and was immediately hired and repeatedly harvested by a cute science girl! She said, "Can you produce a little more?" and I was forced to ejaculate until I could no longer produce sperm for the sake of the research!

A study on "sperm flagellar activity" started by the female members of the school's biology research club. Recruitment of in-school ejaculation monitors to provide male sperm needed for the experiment. Curious about how to provide, I went to ask at the club room... Immediately hired and collection began on the spot! Initially, the story was to use an onahole to assist with ejaculation, but the acts escalated as they tried to collect the amount of sperm needed for the experiment... To make a lot of sperm in the testicles, kintama massage, coded language play, showing off masturbation, cosplay bare bottoms, etc. I never thought science girls would be such perverted girls!!