I Beg the Heroine, the Boss in the Vest, and My Sister, Black Lotus, Both of Them Have Killed People. 求女主马甲大佬，妹妹黑莲花，都杀过人

The two of them don't fight, they are doting on each other, and no one else in the family has a vest! ! ! ! ! ! Please, try not to have a male protagonist, it's okay to have one.