Hatsu Ecchi wa Imouto Deshita

A young man finds himself in an unexpected situation when his first sexual experience turns out to be with his own little sister. What begins as a shocking accident quickly spirals into a complicated relationship filled with guilt and forbidden desire. As they navigate this taboo bond, both siblings struggle with their feelings and the consequences of their actions. The story explores the blurred lines between familial love and physical attraction, leading to a series of intimate encounters that challenge their understanding of right and wrong.