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

Tsubasa, the stepsister and cousin of the narrator, finds herself reuniting with him after ten years. As they spend more time together, they engage in a passionate and intimate affair, betraying the ethics of their familial relationship. The narrator, who is married to Kana, cannot resist his feelings for Tsubasa, and they embark on a three-day journey of sin and pleasure, exploring their desires and rekindling their first love. This taboo relationship involves cheating, incest, and a complex web of emotions, as Tsubasa and the narrator navigate their forbidden attraction.