As a Supporting Role, Why Is There a Heroine Next to Him?

[System + multiple heroines + sweet text + fast pace] Xie Wei accidentally learned from the system that there was a son of destiny in this world, and to this world, Xie Wei was like a supporting character with a small role in the novel. As a salted fish, he didn't care about this kind of thing. After all, he could just live his life well. But the system told him that the so-called Son of Destiny would destroy the world in a few years. Xie Wei needed to change the fate of the people related to the Son of Destiny to use the butterfly effect to prevent the catastrophe. For the sake of the people around him, Xie Wei embarked on a path that changed the fate of others. But as he walked, he discovered something was wrong. The computer genius whose destiny he changed called him "brother" at home every day; the saint of the killer organization wanted to stay at his house; the stunning beauty star wanted to fall in love with him; What's even more wrong is that the school beauty whose destiny he has not changed agrees to marry him; the singer next door who is shining brightly under the stage wants to give him free money... Then Xie Wei discovered that as a supporting actor, there were so many female leads around him. At the same time, he also discovered the truth about the world. ———— This is not a serious cool article, the early stage of the system is just a tool to promote the plot; The male protagonist is very transparent, and there is nothing disgusting in the emotional scenes;