I'm Just a Side Character, but I Became the Guardian of the Marquess Family's Heir

I'm Just a Side Character, but I Became the Guardian of the Marquess Family's Heir cover

I should have died in the accident, but when I woke up, I found myself inside my favorite novel...To make matters worse, I'm just a side character?! According to the story, the duke and duchess have disappeared, and all the servants are about to be fired...I've made up my mind. I'm going to live as…

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