I Can't Tell My Wife... I Loved Tsubasa Like My Own Big Stepsister, And When I Met Her Again For The First Time In 10 Years, It Was Reliving My First Love Again. And Although We Were Both Married, We Forgot All About The Time And Spent The Next 3 Days, Living In Complete And Utter Sin. Tsubasa Amami

At the end of the year, I returned to my hometown of Niigata. There, I reunited with my cousin Tsubasa-neechan for the first time in ten years. The long-awaited reunion brought back bittersweet memories of those days. She was, after all, my first love and also the one I shared my first kiss with. 'Hajime-kun... I've become a married woman.' But she has a husband... And I have a wife... Even though we were first loves, we're both married now. A mistake must never happen. Yet, during the three days of my visit, I ended up spending a night under the same roof as her...