Bìng Jiāo Bào Jūn Gǎi Ná Lǜchá Jùběn / The Sickly Loveable Tyrant Changed to Take the Green Tea Script / Yandere Tyrant Transforms to Take the Green Tea Script / 病娇暴君改拿绿茶剧本

Fu Xin, a powerful president of her company in the modern age, finds that she had travelled to the past and transmigrated into the body of the village girl Fu Qibao along with her Merit System. Now, not only did she have to suffer the consequences of the original host’s cruelty to other people, but she had also earned herself a betrothed. No one had foreseen this exceptional teen who the original host had brutally beaten up to one day become a merciless tyrant of an emperor that ruled the world. He was going to kill everyone who hurt him before… Hold on, why does this sickly tyrant have two sets of personalities? Wait, is he acting innocent in front of Fu Qibao to gain her affections?!
https://teenmanhua.com/manga/the-sickly-tyrant-with-an-innocent-facade