[ABO] Substitute

What a ridiculous title! A replacement in the physical sense! The protagonist and his brother are twins. The protagonist has a mutilated a and the elder brother has an o. Their facial features are exactly the same, but the protagonist looks cooler, gloomier and more tolerant. Both of their parents died, and they had to take their inheritance to live with distant relatives. The distant relative is from the fourth eldest family in a big family. This big family is very cunning and cunning, and distant relatives also have good intentions and want to kill two people and take away the inheritance. The fourth bedroom is relatively weak in a big family. The most awesome person in this family is the legitimate son of Dafang (who has outstanding personal ability, referred to as the eldest brother). He avoids strangers and does not approach any sex. He is vaguely the future person in charge, and then the second brother of the second fang family who is a pampered and spoiled playboy. The second and fourth children are both naughty. In addition to the family property, they also have a crush on the twins and want to play with their elder brother. (After all, the protagonist is A) The protagonist is A, but he was also disabled due to the accident in his parents' accident. Anyway, he can't be a normal A in this life. He wants to protect his brother, gritted his teeth and started to make dark calculations. He wants to take the lead in his brother's place. If he wants to play, he can play with him. Anyway, A won't get pregnant. If nothing else, I was going to fall into some NP plot () but by some mistake, the protagonist ended up in the eldest brother's bed. Intention:.