START-658 | Mana, a female instructor, looks down on and spurns men who have given up on sex in favor of masturbation—all while putting them through a "cum-control" lesson designed to taunt them. — Mana Sakura

In "Masturbation-Abstaining Men (Guys Who’ve Given Up on Sex)," SOD Star Mana Sakura uses her own body to lead a 5-part intensive course on abstaining from masturbation: #1 Masturbation accompanied by cold, lewd verbal taunts; #2 Handjobs (and blowjobs) paired with explicit, dirty talk; #3 High-intensity, exhibitionist-style sex; #4 Face-riding with a strict "no-erection" rule—ending in a blowjob/handjob session (without ejaculation) when the rule is broken; and #5 A "no-ejaculation" sex session featuring intense edging and fluid play with one of the men who took the course.