I Transmigrated and I'm Invincible? The System Wants Me to Be a Side Character?

A car accident left Li Yuan in a vegetative state.

When he opened his eyes again, he found himself in a fantasy world, and he'd awakened a System!

System: "I grant you the power to be invincible in this world..." Before the System could finish speaking, Li Yuan plopped down on a rock and crossed his legs.

"First, find me eight or ten saintesses so I can enjoy myself."

System: ???

Me: "It's time I enjoyed life for a change."

System: "Don't you want to go back?"

Me: "Go back? To be a wage slave again? I really like it here, so I'm not going back."

"???!!!"