Becoming the landlord of a harsh "Demon's Lair" changes a life on the brink?! A dramatic survival fantasy begins!

A young man, kicked out of his home, aspires to become an adventurer but quickly falls into a downward spiral. Determined to change his life, he buys a land in a remote area, dreaming of creating his ideal home. However, the land is known as the Demon's Realm, teeming with dangerous creatures! Facing daily survival challenges, he grows stronger and attracts a group of unique residents!? But external forces soon threaten their sanctuary, leading to a dramatic survival fantasy!