I Was Tricked into Becoming a Star by My Girlfriend

The writing style and plot are actually quite good, but I have a question. The main development direction of this book is basically that the protagonist finds a way to collect negative emotions, and then the heroine consumes them for him. So, does the gain brought by these negative emotions to the protagonist when collected is still there? It is a bit confusing. Since you have chosen the system flow, you should seize the advantages of the system flow, which is the digitization of the protagonist. He can clearly tell us that the protagonist has gone through so many things, is he stronger, where is he stronger, and what benefits have he gained.