The Cannon Fodder Sidekick's Daily Routine of Clinging to the Powerful

As the only woman of her generation in the Mu family, Yun Jin is utterly exhausted.

She has to deal with the old man’s romance novels and keep a centuries-old promise.

Then, without meaning to, she gets tricked into coming here by the old man, and somehow ends up married, too. Her lifelong affairs have been settled for her.

Wasn’t he supposed to be a crippled prince? Why has he suddenly stood up, and why does he keep getting handsy?

Wasn’t the heroine supposed to be selfless and always put others before herself?