天空の城を貰ったので異世界で楽しく遊びたい (WN) (Associated Names)

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…