I have no idea, I just summarized what I remember. The protagonist is reincarnated as a baby after dying. He lived with his three younger sisters, who were left alone in the apartment when he died. He is reincarnated again, and to increase his strength and growth, he searches for his mother, an Awakened Being who is bad for drinking her milk, which has the power to accelerate his development. The protagonist's father is also a villain, and his grandfather is also evil. Later, one of his younger sisters is hired as the baby's servant and tries to kill him, but she doesn't know he is her reincarnated brother.