I went to a fireworks festival with a friend and happened to see my teacher in a yukata, waiting for her boyfriend. It seemed like she was meeting her boyfriend, but due to work commitments he couldn't come, so she was heading home alone. I liked my teacher, so I called out to her and invited her to go to the fireworks festival with me. Wanting to make her happy, I took her to a special place where she could see the beautiful fireworks, but it suddenly started raining heavily. I couldn't suppress my desire when I saw her skin showing through her yukata and her lewd appearance.