BASJ-036 - Tsukino Yuri, a depraved adulteress who distorts a boy's sexual preferences and makes his life a hard mode.

A boy entering puberty with unending interest in sex. He desperately wants to do lewd things and falls into the trap of an adulteress. She enjoys distorting younger boys to her preferred sexual kinks, and becomes aroused as the meticulously trained M-types beg her to make them ejaculate. The boy doesn't realize his life has become 'hard mode,' and simply clings to the adulteress because he wants to ejaculate. Eventually, he is teased and made to ejaculate, and this is repeated until he can no longer ejaculate on his own. If he becomes the ultimate complete M-slave, an endless ejaculation hell awaits him until the woman gets bored.