I was reborn as a victim in a heartwarming game, but something feels different from the original story.

One day, I found myself reincarnated into the world of a legendary mind-breaking corruption game. Moreover, as the character whose girlfriend gets stolen by the hero. I tried my best to position myself to minimize mental damage, but before I knew it, I was witnessing the scene where the hero awakens his powers!! Ugh, my mental state is done for... Or so I thought, but wait? Isn't the plot developing differently from the original?