After the Divorce, She Married Her Sickly Younger Brother

After two years of marriage, my husband cheated on me and my mistress became pregnant. The happy life was shattered. A boy appeared next to her and said to her: "Sister, you and I." -- Before jumping off, Shi Jianyan held her tightly with both hands and whispered in her ear: "I will accompany you to face the fear of death, and I will accompany you to regain a new life. Strong, independent, gentle sister vs. Shirokiri and Kuro's yandere brother