Tenkuu no Shiro wo Moratta no de Isekai de Tanoshiku Asobitai

When an angel’s careless error leads to the untimely death of Daiki Shiihara, the celestial being goes to great lengths to cover up the blunder. To ensure his silence, Daiki is reincarnated into another world and offered a single wish as compensation. Without a moment's hesitation, he requests a magnificent Heavenly Castle suspended in the sky. His extravagant demand is instantly granted, and a colossal floating fortress materializes above this unfamiliar realm, immediately plunging its inhabitants into chaos and awe. The sudden appearance of the airborne citadel draws intense attention from every corner of the new world. As various factions attempt to make contact with its mysterious owner, Daiki quickly finds himself at the center of international intrigue. One nation resorts to brute force, launching aggressive campaigns to seize the castle for themselves, while others adopt a more diplomatic approach, seeking to forge alliances and win his favor. Thrust into a complex web of political maneuvering and unwanted notoriety, Daiki must now navigate these escalating conflicts and decide exactly how he wants to enjoy his extraordinary new life.