You Were The One Person Who I Didn’t Want Finding Out About My Secret … That Day, When My Big Sister Came To Tell Me That She Was Going To Get Married, Her Face Was Filled With Love And Happiness, But The Truth Was That I Had Just Gotten Fucked By Her Fiancee, My Future Big Brother-In-Law 只有不想讓你知道…收到喜愛的姊姊結婚報告的當天、身為妹妹的我被將成為姊夫的男人襲擊。