Oops! The Hot Spring's a Cruising Spot!

Nao's a hiking kinda guy. He enjoys going in groups or by himself. One day, after hiking a big mountain, he spots a hot spring bath. As he's reading about it from outside, a few key words catch his eyes. The bath supposedly helps you have a bigger cock. Nao's always had issues with his own size because he's so small downstairs, so he decides to go on in. No one's inside, so he has the bath to himself, at first. He quickly learns that the hot springs aren't just used for their health benefits—they're also a gay cruising spot!