A dangerous situation I absolutely must not take action against. My beautiful older sister and I are step-siblings with no blood relation… Bound by our sibling relationship, we indulge in forbidden pleasures and an illicit summer. Fujimori Riho JUL-587

On a summer day filled with the chirping of cicadas, I returned to my hometown after a long absence to pay respects to my mother. My older sister, Riho, had cared for me in place of our mother since I was little, a role I had always admired. However, on the night the ceremony ended, Riho revealed that we weren't actually blood-related siblings...