[HUNTC-474] Once you step through the noren curtain that says "No entry for those under 18," you can have sex with sexually frustrated female students whenever you want! Behind the noren curtain that says "No entry for those under 18," t (Censored)

In an unused classroom in an old school building, there's a room with a curtain covering it, prohibiting entry for those under 18? A group of girls hear such a rumor. Feeling like a school ghost story, they set off on an adventure to find out the truth! They discover a classroom with a curtain covering it! They timidly peek inside... and find themselves in a lewd world beyond their imagination! And once they step inside the classroom, they find themselves drawn into that naughty world, and have sex...