Forced to Inherit a County, I Owe an Astronomical Debt

I'm Ger Kape. I studied at the largest academy in the Demon Realm, climbed to the summit of a mountain where a black dragon lived, and crossed the Sea of Death as it burned with flames. I'll show you how to survive in the most extreme and dangerous place of all, the Demon Realm, after running up a sky-high debt. I'll have to face all kinds of challenges. In a place like this, without the right survival skills, you won't last even a day. Today, we've arrived at the Demon King's palace. It's crawling with danger, and to survive here, we'll have to find something rare. Shh! Look, a wild Demon King's wife.

"Darling, have you had enough fun?"