College student Chiaki came to receive a massage to relieve muscle tension, but she finds herself caught in an unexpected and overwhelming situation. As the treatment progresses, an unfamiliar tickling sensation begins to spread through her body, strangely pleasurable and impossible to ignore. Following the therapist's instructions, she gradually has her clothes removed and her limbs restrained. With each passing moment, the tickling intensifies, escalating beyond control. Unable to stop laughing, she screams, "Gyahahaha!! N-no more!! Yahaha, it's too ticklish!!" The so-called therapy continues relentlessly, trapping her in an unending tickle torture. Amidst the uncontrollable laughter, all she can do is regret ever stepping into this clinic.