
Chika, an older sister concerned about her brother's lack of sexual knowledge, decides to take matters into her own hands. After her brother awkwardly brings up their parents' bedroom life during dinner, Chika feels a sense of duty to educate him properly. She uses her own body to teach him everything from how to put on a condom to the ins and outs of sex.




















A work overflowing with her gentle, leading nature. You'll feel like it was a great purchase every time you watch it.
I know AV is just fantasy and fiction, so it's pointless to nitpick, but if the premise is a biological sister teaching her brother about sex, the scene loses half its eroticism if the actress doesn't convey a sense of taboo. It would have been better to just make them non-biological siblings or have a friend teach him. Such a waste.
If I had an older sister, I'd want someone like Chika-nee to teach me. I want her to teach me every single day.
They look like they're only in 1st or 2nd grade of elementary school. It's just too unbelievable, honestly. And the brother looking so old doesn't help either...
*This is a story about how she climbs the adult ladder under the guidance of a beautiful older sister, Chika Arimura. It makes me fantasize that I want to be guided by a lady like this and become good at it.