Though I’m a Homebody, I Found Myself in a Dark Captive Genre [Novel]

I died from overwork, and when I opened my eyes, I had possessed a character in a novel?! But why, of all people, did I have to possess the princess's chief aide and stand-in ruler...?! "Feeling sleepy after eating? NO MEALS." "Sleeping is a waste of time that could be spent working? NO SLEEP." While pulling all-nighters, waiting for the day I'd finally collapse from overwork under my exploitative employer, the crazy princess Lemeia, I was conveniently(?) kidnapped...? But since when are kidnappings this comfortable? They feed me, let me sleep, and even give me money...! And so began my half-hearted, careless captivity life with my kidnapper, Duke Ravioli! Will I, a former K-office worker and current slave to the princess, finally be freed from death by overwork and manage to hold onto this comfortable captive life in this new existence?