[Reducing Mosaic]SDAB-188 A female athlete who commutes by train is sexually assaulted and then artificially inseminated with copious amounts of semen in a rundown apartment. Nanami Hayami

Nana (18), a member of the school's sports club, switched from cycling to commuting by train after retiring from her club activities. In the crowded train she was not used to, she noticed something touching her buttocks. It was her first experience with molestation. In her life that had been distant from sex until now, the pleasure given by the molestation was unforgettable... Nana became increasingly addicted to dangerous games.