The Real Daughter Comes with the Melon-Eating System

Eat melon + mind reading + dual systems + no male protagonist + a bit funny Qin Shiyi was accidentally bound to a melon-eating system, which told Qin Shiyi that the world he was in was a book, and Qin Shiyi was a cannon fodder in the book who could not survive three episodes. Even his own biological family members are the mediators of the relationship between the heroine and the hero. The heroine is the fake daughter Qin Waner. After knowing the situation, he read the original work over and over again. After watching his family members' mental manipulation and his own tragic ending, he decided to respect other people's honor cases and let go of expectations of family affection. But why is the plot getting more and more sideways? How come the three brothers have become three good brothers? Did he also go from the 18th tier to the top?