ATID-661 Hikari Azusa, a busty office lady, has been subjected to aphrodisiac oil every morning on a crowded train, which has developed her nipples to the point of orgasm. - Azusa Hikari

"I found you!" The perverted Tsuji sets his sights on Sato Kozue, a quiet-looking office lady. Tsuji's method is to train the nipples of quiet women who can't ask for help, every morning on crowded trains where they can't move. After having aphrodisiac oil rubbed into her nipples and being relentlessly tormented day after day, Kozue becomes so sensitive that she is developed to the point of orgasmic incontinence...