Today again, she feels touched... 'Kokoro', a schoolgirl commuting on a crowded train due to her popularity among perverts because of her innocent looks and cuteness, finds herself being fondled under her skirt every day by middle-aged men. One day, she decides to let out a loud moan. However, instead of the usual playful touches, she receives precise finger work that targets her exposed pussy lips and drives her crazy within seconds. As she succumbs to pleasure, she realizes that not only has she fallen for the perverted old man, but also for his cock. Her boyfriend doesn't stand a chance against this newfound desire. A normal schoolgirl becomes obsessed with sex and surrenders both body and soul to the older man's advances... *The content may vary depending on the distribution method.