<Sunny, lively, sharp-tongued heroine + seemingly frail and easygoing, actually scheming and obsessive powerful male lead + quick transmigration + chasing his wife to the crematorium + unexpected contrast>
Note: Both leads are each other's one and only!
He Shuyao accidentally transmigrated into a book set in ancient times, taking the place of heiress He Yaoyao to marry the powerful court official Yan Wushang.
She thought her husband, who looked so scholarly and frail, would be easy to handle. But just as she'd become a cook and started planning to divorce him and run away, he imprisoned her in the attic.
She tried jumping into a lotus pond to get back home, but he stopped her every time. At last, when he went away on business, she finally managed to return.
But just a few months later, she accidentally transmigrated into the Crown Prince's bed. The man who'd been going mad searching everywhere for his wife happened to witness the scene.
Now this really was a case of a scholar meeting a soldier: there's no reasoning with them...
Yan Wushang: So that's your lover on the side?
Crown Prince: You're the one with a lover on the side! Your whole family is!
He Shuyao: What do I do, what do I do? They're both yandere. Do you think I can transmigrate back again, everyone?...
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Important note:
Later on, the male lead stages a rebellion and becomes emperor himself, killing the Crown Prince. He's loved only the heroine from beginning to end.
He loves acting and pretending to be weak in front of the heroine, but in truth he's an obsessive, terrifying madman. Later, he goes completely off the rails. If the heroine doesn't care about him, he loses it, and he's even jealous of her maid.
The male lead's motto: I'm my wife's little servant.
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This story is set in an imaginary historical world and is entirely fictional.