[Age difference] [Nurture system] [White cut black] (at least in front of my sister) [Healing] [Modern overhead]
The big bad wolf criticizes his younger brother and his crazy older sister
Jiang Bie grew up in an orphanage and was adopted by a man on this day. Later, Jiang Bie was trained as a capital killer. When the male protagonist was fifteen years old, he was seriously injured during a mission. He happened to meet Meng Li who was returning home. Meng Li took Jiang Bie home, treated the wound, and adopted the male protagonist. As they got along day by day, the boy secretly fell in love with the girl and secretly made a vow that his sister would only belong to him in this life.
Intention: "Does justice also have to distinguish between black and white?"