Childhood friends: Yusuke, Sumi, and me. Since school days, the three of us shared a deep bond—but secretly, Sumi and I were in love. We loved each other more passionately than anyone else. However, I got a job far away, forcing us into a long-distance relationship. Years passed, and eventually, I received news that Yusuke and Sumi had married. I returned to my hometown to celebrate. As the night progressed, Yusuke got completely drunk and passed out. Left alone together, Sumi and I exchanged one final proof of our love.