Su Xiaomi played a custom-made single-player game.
The game was simple: kill the male lead and destroy his immortality!
Su Xiaomi treated it as a stress-relief game and played it with such enthusiasm that she forgot to eat and sleep. The male lead died at her hands 108 times.
Then Su Xiaomi transmigrated, and found herself inside the game.
Only then did she realize this was actually an escape game. If she escaped and survived in every game world, she'd have a chance to return to the real world.
Naturally, Su Xiaomi ran into the male lead she'd killed countless times before.
Su Xiaomi: !!!!????
Male lead: Hmph.
P.S. Other than being able to see the game's hidden side-quest and completion prompts, the heroine has no special abilities.
The male lead has off-the-charts combat power, intelligence, stamina, and equipment. Later on, he even surpasses the Main God. He's a perfect, overpowered Mary Sue of a man, explosive levels of awesome, invincible.
Theme: I killed the male lead countless times