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

I died from overwork, living as a slave to a small company. When I opened my eyes again, I found myself reincarnated as an extra in a dark confinement novel. And somehow, I ended up being kidnapped instead of the female lead! But something feels off. I thought I’d be killed after being kidnapped, but instead, they’re just keeping me locked up? They’re confining… a homebody like me? They never let me step outside, but everything I need is provided for me, and no one complains even if I laze around all day. Source: MU Includes 10 extra chapters.