My aunt offered to buy me some limited-edition sweets, so we took the train together. Unexpectedly, the train started getting crowded, and for some reason, it was filled with women! I secretly got excited and developed a full erection from the unfamiliar scent of women and their bodies pressing against mine. I panicked, thinking I'd be treated as a molester if my erection was noticed... I had to do something! Noticing my distress, my aunt quietly reached for my crotch and said, "Auntie will take care of it," before gently lifting her long skirt and guiding me inside! What?! Right here? Despite my confusion, she pushed forward and we had secret sex on the train! Thanks to that, my erection went down... but I ended up creampieing her... I rode the train with complicated feelings. However, from that insertion, my aunt became seriously horny, and we moved to the restroom for an unexpected round of additional fucking! It was the first time in my life I've had such a heart-pounding, exciting day.