After leaving the outdoor hot spring, we relaxed in our room, enjoying food and drinks late into the night. When I woke up the next morning with a natural morning erection, I invited my girlfriend to go outside the inn. Still wearing our yukatas, we walked together searching for a suitable spot, gradually exposing ourselves. Even though she was nervous and trembling, she obediently followed my instructions while glancing around to avoid being seen. When I casually touched her breasts from behind, she became aware of her own reactions, slowly growing bolder, making the experience even more exciting.