A childhood friend with an incredibly youthful face, unchanged in height and appearance from 10 years ago, regains her youth through a time-traveling sexual encounter. COGM-057

I was shocked by how my childhood friend had grown up, almost criminally. She'd always been adorable, but even a while after I first met her, she hadn't changed. I invited her to the fireworks, and then we went on a date in yukatas. The flirtatious sex left a deep impression on me!