Mio Ishikawa takes on four full sex scenes for the first time, pushing the hypersensitive university student into a new erotic awakening. She has her first encounter with an older man, enthusiastically gives handjobs and footjobs, gets slippery in oil sex, and sweetly begs for more. Her first 4P ends with relentless follow-up pounding that continues after she cums, leaving her squirting, dazed, and experiencing repeated orgasms for the first time.