Villain: Peeking at the Diary, the Heroines are All Set Up

Su Ming transmigrated into a novel called "The Son-in-Law," gaining a system that made him stronger by writing a diary. [May 3rd, sunny. Today I arrived in a new novel world. The book's title is... well, what era is this? There are still novels with such a chuunibyou title?] She lives in a book? Is she a character created by someone? Qin Yanran found it unbelievable, but that's exactly what was written in the notebook, and the content that appeared out of nowhere was extraordinary. [I never thought that I, Su Ming, who's been smart all my life, would have to play the fool in this brainless novel.] [I'm clearly the smartest one, look at the female lead, she's completely stupid.] She thought she'd just write down her daily life, record her experiences, get rewards, and maybe even play the villain to flatter the protagonist, and finish the story. But unexpectedly, the female leads all have their own side stories in the diary. They don't follow the usual formula, and the story goes further and further off course. Finally, the female leads' characters collapse!