School trip with the female teacher I admired, secretly having sex in the futon

On the long-awaited 2-night, 3-day school trip, I came to Kyoto in a group with my close friends. Tourism, cooking, baths, everything was fun. And then the night came, we were revealing who we liked. As someone who likes adult women, I'm curious about my homeroom teacher, Mr. Kazama, but my friends have been making fun of him. Meanwhile, after the lights were turned off, Professor Kazama came over. Whether he knew what I was feeling or not, he crept into my futon while sleeping friends were on his side...