Let Me Fix the Male Lead

Keyboard warrior "Die-hard Diana Fan" has spent her life defending her favorite novel character from fans of the horrible male lead Ian Kloud. That is, until she dies and finds herself reincarnated into the novel as Eloise, Ian's first wife! At first, it seems like the worst possible fate, but what if this is an opportunity? If Eloise can mold Ian into the ideal husband for her beloved Diana, she can give her the perfect ending. Unfortunately, she finds that it may be harder than she thinks...

(Source: Tapas)