Onsen towns are social scenes for adults. Even if women walk around looking composed, they're seeking that. If you pretend to be alone or a couple of men, you'll get plenty of interest. If you're staying at a ryokan in an onsen town, the barrier is low. Once you take off your clothes to bathe in the onsen, all you have to do is immerse yourself in the pleasure of another man's cock to relieve your pent-up desires.