The free-use bell

Ever since the AIs took over, the world has been a much better place. There's no war, no famine, very little disease and thanks to the orbital death lasers, almost no crime. If it weren't for some profound misunderstandings of human nature, it would be perfect. The free-use bell is probably one of those profound misunderstandings. Installed in every school in the world, when it rings, the rest of the school day becomes a mandatory free-use session where guys can have sex with any woman they want. Your school just got their bell. TW - rape and CNC, possibly other violence, arguably NTR.