Description:

An angel made a mistake, resulting in Shiihara Daiki’s death. In order to hide the mistake, he was then sent to a different world. The angel will grant him one wish as a payment for keeping it a secret. Daiki asked for a Heavenly Castle floating in the sky without hesitation. Suddenly a floating castle appeared in the new world, which causes confusion amongst the people. They attempt to contact Daiki in various ways. A country tries to steal it by force, while another seeks to befriend him. What in the world will Daiki do? (Source: MU)

Alternative Titles:

天空の城をもらったので異世界で楽しく遊びたい, 천공의 성을 받았으니 이세계에서 즐겁게 놀고싶다, I wanted to play in another world because I received the castle in the sky