[Male Lead, No System, Multiple Endings]
The protagonist, a college student, suddenly collapsed at his computer after exercising late at night. When he woke up again, an angel told him he'd become a background character in the Galgame "The Fall of the Magician" and gained a younger sister!
"It's up to you to help the protagonists defeat the Demon King."
"Me, defeat the Demon King? Seriously?!"
But! The original game has no ending where the Demon King is defeated!
"Dear Angel, could you give me some kind of cheat ability?"
"Still thinking about your System? You're not getting one!"
"How could you..."
It's over! How is a background character with no cheat ability supposed to survive in a world destined to end in tragedy?
His answer:
I have no idea!
He planned to follow the game's story at first, but then realized the plot seemed to be drifting away from the original.
What? There are multiple transmigrators and people who have been reborn?!