I was living an ordinary life as a teacher. One day, while walking down the street, I reunited with "Mizuki," a former student of mine. After she approached me, we started meeting up for meals several times. One day, Mizuki said she wanted to see my apartment. That's when she confessed, "Please abuse me. I want to be trained by you, sensei," openly declaring her masochistic desires. From then on, she began regularly visiting my place. What she sought wasn't just a simple relationship, but the pleasure derived from being disciplined by me as her teacher. Answering her longing, I began welcoming her into my home every day, fulfilling her deepest wishes.