One girl from the group, Uta Kohaku, Yuka Sawakita, Ami Maeshima, Ai Mizushima and Reira was chosen to get fucked in a lab, so she could be monitored as long as it lasts, because scientists wanted to know new things about female orgasm, if possible.
92 09:59 
9 05:27 
3 07:43 
7 04:25 
8 10:08 
9 07:59 
5 14:22 
2 07:28 
5 01:48:16 
12 05:31 
11 22:05 
11 08:26 
10 05:20 
1 11:03 
9 28:03