The Obsessive Big Shot's Mute Boy

I seem to have read this book before, but the plot doesn't seem to match what I remember. I can't remember the name. I asked the AI ​​about the plot I remembered. The AI ​​told me it was this book, but it was completely different from the plot in my memory.

The character path is too bad, the ending is too perfunctory, and the author's arrangement of the heroine's emotional path is too bad. It feels like it revolves around the conflict between the male and female protagonists, and the supporting characters' emotional path is not clearly explained.