Restraint... Ecstasy... And Ascension! A naughty older sister with the finest tongue skills × a helpless, restrained tuna man!! Though the body is restrained, the mind is set free... This is the intoxicating feeling of selflessness!! My body, restrained in a lewd chair, exposes all its erogenous zones to the older sister, becoming prey to her salacious tongue. In this world, dominated by a woman's tongue and saliva, an irrational yet sweet reality certainly exists here.