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I'm not beautiful, but I'm dating a girl with a good personality, and I'm starting to think about marriage. One day, I met her best friend Jun for the first time when I went on a hot spring trip with her best friend couple, and I fell in love at first sight with my ideal type. However, when she learned that Jun was engaged to her boyfriend, she was heartbroken. That night, I saw Jun's beautiful body in a mixed bathing hot spring, and I forcibly formed a relationship with her, even though I knew it was useless.