"Why don't you just watch this and jerk off?" The sweet and sadistic Nanatsumori's Spartan HOW TO SEX, in which your sex skills improve the more you masturbate!! "For those who want to make the woman they meet in the spring cum" Premature ejaculation improvement & vaginal orgasm edition1. An ultra-luxurious face-to-face lecture by Nanatsumori Riri2. A practical lecture by veteran male actor "Tabuchi Masahiro"3. It will all be ruined if you cum before she cums! Premature ejaculation improvement blowjob endurance4. Making use of the results of special training and losing your virginity5. A fierce piston that is determined to make Nanatsumori Riri cum no matter what