The first step toward rehabilitation is learning endurance. Yuri is tested on how long she can maintain various instructed poses—standing at attention, resting position, kneeling, splits, yoga postures—and she bravely challenges each one. While being tickled mercilessly on her vulnerable spots like underarms, sides, and inner thighs, she manages to withstand the torment inflicted by the female staff. However, when the enforcer begins kneading and tickling her intensely, she loses control and collapses out of position. Afterward, her entire body seems hypersensitive, reacting strongly even to the slightest touch. The highlight is her touching resilience and strength as she stumbles, questioning "What is endurance...?" yet still struggles to return to the original pose. For those who enjoy watching a girl endure tickling under psychological restraint, this is a highly recommended title from Adore's Wakashi Labo series.