Transmigration? Transmigrating into a Book

[No female lead + political intrigue + redemption + immortal cultivation + warmth + devoted, exclusive romance] [Talkative, scheming emperor who plays the fool vs. sincere, straightforward general who values his health] Yan Qingyuan transmigrated and became a great general in a fictional era. But what's with being poisoned with a deadly toxin and turning into a sickly weakling the moment I arrive? Well, what's done is done. I'll do my best to find an antidote and make a good life for myself here. But before I could make any plans, I discovered that the Wei family's Third Miss had transmigrated too. Actually, that's not quite right. She said she'd transmigrated into a book. We're all characters in the story, all supporting characters, and we're all doomed to miserable endings. The only way to change our fates is to cling to the male lead, Emperor Zhou Chebai. On the surface, Zhou Chebai is a powerless emperor. In reality, he loves playing the fool while hiding his true strength. I'll get him to lower his guard around me first.