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Oto has a bright smile and is popular throughout the school. One day, I was called to the physical education warehouse to ask for some advice from the janitor, but when I got there, my homeroom teacher was waiting for me. Both the janitor and the homeroom teacher were stalkers who made noises. Her homeroom teacher forces her to have sex with him, but the sounds she hears, which she has never experienced before, are captivating. And a strained relationship is built involving the janitor...