One day, I, with my short and prematurely ejaculating penis, swapped with the most incredibly hard penis in my grade. My girlfriend was brought to a near-death orgasm and I was thoroughly penetrated. (Tsukino Kasumi HMN-129)

Having a short, prematurely ejaculating penis that couldn't satisfy my girlfriend Xia... one day, I accidentally bumped into my incredibly carnivorous classmate... When I got up, I found my penis was still erect! Looks like I swapped penises with him... How lucky! To win back my girlfriend, I made her orgasm repeatedly!