Popular writer Saori, in addition to her busy writing activities, often suffers from stiff shoulders due to her ample chest and frequently uses outcall massage services. Recently, she has been receiving treatments from Shirojima, who is outwardly a skilled masseur but secretly a professional at skillfully stimulating erotic pressure points and leading people astray. Stimulated by Shirojima's treatment, Saori was easily deceived by his smooth talk and became captivated by anal pleasure.
