HUNT-471 - I hid a spy cam in my high school sister's room and the footage is insane!

There was one girl in this film I really liked, but I don't know her name, and since it's a 12-13 year old film, I can't find any details. There's just something fresh about high school girls, isn't there?

Cast: Machiko Ono / Sayaka Mochizuki / Satomi Kanazawa / Mari Kobayashi, and 2 others (Total 6)

There are too many people compared to usual, so it's hard to follow. I feel like it would've been more realistic if they used a younger, high-school-looking actor... I really want to know who the sister is (I asked on a Q&A site and it got deleted lol).

*I watched "Sleepover Party" 1 and 2, where everyone was supposed to do their homework, and both were good, but I rather liked 1. So, what about this work that is similar? Hmm, it really feels like I'm watching real high school girls, and the way they're having fun with each other, each other's bodies, and their interest in sex is as realistic as ever, and it's well expressed. Well, compared to normal AV, it's too long and requires a certain amount of patience, as it's 4 hours long. The high school girl who appears this time is an amateurish loli who doesn't wear much makeup and reacts naively to her normal appearance, which is a little cute if you look around her. Everyone's breasts and nipples are beautiful and good. On the other hand, the actors are a little off. Two of the three seemed quite confused. There's also something called King's Game.