Three Chosen Ones, and I Drove Two of Them Crazy

[Captive love + corruption and demonic transformation + male suffering] P.S. The remaining chosen one is her actual older brother, so she won't be pursuing him. Demon Lord Chen Yin was the greatest ruler the demon race had seen in a thousand years. To escape Heaven's punishment, she faked her death with a heavenly thunderbolt and was reborn a thousand years later in the body of a royal princess. After extensive calculations, she discovered that three chosen ones had emerged in the world: besides her crown prince brother, there was a disciple of the leader of the righteous sects and the son of the Demon King of Xizhou. She schemed to share life-and-death trials with the two men, becoming their trusted companion through hardship. Her eldest brother, Qi Liangyun, gave up the Heartless Dao for her and cultivated the Path of Affection instead. Her second brother, Hua Zhaoying, fell prey to growing inner demons for her, losing his chance to attain the Great Dao. But to her, everything that came before was just an act. How could you believe a demon's sincerity? Chen Ying, her little follower: “You're all just passing through. The young mistress is mine!” Chen Yin: “Didn't you always think of me as your older sister?” Chen Ying: “My dear older sister~”