The path to rehabilitation begins with learning endurance. Yuri is commanded into various poses, tested on how long she can maintain each position. Standing at attention, resting, kneeling, splits, yoga poses—each instruction pushes her body to its limits. Particularly sensitive areas like her armpits, sides, and inner thighs become increasingly difficult to endure when tickled by the executor, compared to stimulation from female staff. At first, Yuri tries to resist, showing determination to withstand the sensations, but gradually her body begins to react uncontrollably. In the end, questioning herself, "What even is endurance...?", she still attempts to return to the original posture—a touching display of courage and strength. Within psychological restraint, the image of a girl being tickled yet striving to regain control through sheer willpower becomes deeply compelling. This work is a single episode portraying endurance, surrender, and the strength that lies beyond.