[One woman, multiple men / All male leads are sexually inexperienced / Dual Systems / Rivalry for her affection / Slightly harem-like / Secret identities revealed]
The secondhand System says, “Lower the male lead's corruption level, or the world will be destroyed.”
Gao Yue does it.
But when the old System returns, it says, “It's not just the male lead. Your younger brother, older brother, and close friend: all their corruption levels are rising.”
You have to keep each of them in check, one by one.
Gao Yue asks, “What if I can't?”
The System falls silent for a moment. “Then they'll fight over you.”
She never imagined that “fight” meant four men turning on one another for her sake.
The Qin residence becomes a battlefield. Surrounded by flashing blades, she finds herself at the center of it all, every pair of eyes asking, “Who will you choose?”
The male lead stares at her. “Yue'er, you said I was the only one you cared about. What about them?”
Her younger brother sneers. “You didn't say that when you came to comfort me, sister-in-law.”
Her older brother holds his blade across his body. “You're afraid I'll become corrupted? Then I'll show you just how corrupted I can get, and see if you can bear to abandon me.”
And the close friend who's been bedridden for years slowly rises from his wheelchair, his voice hoarse but gentle:
“Yue'er... You don't have to guard against me. You gave me this life. Take it whenever you want.”