The Duke Needs His Coffee

The protagonist finds herself possessing the body of April, a side character destined to be used by the villain and eventually killed by the male lead. Ignoring the original plot, she resolves to live a quiet life running a caf in the countryside.

However, her plans begin to unravel when she discovers that the boy shes been caring for is actually the nephew the male lead has been desperately searching for.

April ends up becoming the male leads personal barista, brewing magical coffee for him every night, and eventually running a caf in the capital. She tells herself its only until the female lead appears, but as she slowly opens up to the male lead, she finds herself becoming more and more entangled in a life by his side.