You're dumping me, huh? Fine, then I'll just pick up the school beauty and make her my wif

[Urban slice-of-life + redemption + single female lead + no system + slight yandere]
Everyone in the school knows that Su Qinghe is an unattainable beauty.
The sight of her playing the piano at the opening ceremony became the ideal image of countless boys' youth.
Jiang Che was an exception; he wasn't interested in school beauties or anything like that.
But a month ago, she mysteriously disappeared, becoming the talk of the school.
When they met again, the former goddess was huddled next to a trash can in a dark alley, blind and filthy, beaten and kicked by thugs for a torn plastic bag.
Jiang Che kicked over the person who had bullied her, and out of kindness, took the "broken moonlight" home.
Jiang Che thought he had just picked up a troublesome person by chance, and planned to settle things once she recovered from her eye injury and the truth was revealed.
But he didn't know that in the heart of this girl who was swallowed by darkness, he had become the only straw that could save her life.
"Ah Che, it's so dark outside, please don't let go!"
At first, she was as humble as dust, even her breathing was done with utmost care.
Later, Jiang Che discovered that things were gradually spiraling out of control...
On his birthday, Su Qinghe, who was once as aloof as snow and wouldn't let anyone touch her, wrapped his wrist with red silk, breathed sweetly into his ear, and had an almost insane obsession in her eyes:
"A-Che, you're the one who picked me up, so you'll never lose me again in this lifetime."
"If you try to run away, I'll lock you in a dark little house, okay?"
Jiang Che: ?
Where did the aloof and beautiful school beauty go? How did this white moonlight turn into a dark one? Are you still trying to keep her to yourself?