Quick Transmigration: This Was Supposed to Be Redemption, So How Did It Get a Happy Ending?

【Quick transmigration + redemption + turns dark + yandere + happy ending】 Bound to a redemption System, Lin Xiran tries her best to warm the heart of Xie Fengzhou, whose life has been full of hardship. But his happiness level rises slowly, while his darkness level keeps randomly going wild. System: 【Alert! The target wants to keep you treasured forever!】 Lin Xiran: “Wasn’t I supposed to be playing the role of a warm little sunshine?!” Watching the handsome young man steadily approach, she gives an awkward smile and raises her hands. “Um... can I still apply to change my redemption plan?”