A plain and serious encyclopedia administrator working at a certain prefectural university makes a miraculous AV debut in only one movie, Yuko Kasuga!

Yuko, a librarian, appeared wearing a plain long skirt and glasses. ``I masturbate almost every day...'' Judging from her serious appearance, she seems to be more lewd than you would imagine. I was excited to see her electric masturbation while her anus was twitching, and to face-sitting for the first time in her life. And her precious glasses become muddy with continuous ejaculation... Still, the naughty Yuko is very excited! She is a slutty librarian who cums many times during sex and even releases naughty bodily fluids.