[Machine Translation] The strongest husband's party challenges an astonishing quest in an aerial city where angels live! Tsugumi and his friends visit the "Sanctuary of the World Tree" and enjoy the local life by killing monsters with fairies and staying in a tree house. After that, they take a locomotive and a dog sled to an aerial city where angels live! When they arrive at a beautiful floating island, an extraordinary quest awaits them: scrubbing the back of a giant dragon with a deck brush...? The 9th volume of this ultra-realistic and heartwarming game fantasy!