Ghost Hunter from Another World

Where is the Blue Wind Realm? The ancients often said: The wind is blowing, what's so sad about it, the paradise of the past is now in ruins; the clouds are clouds, how can I be angry, the lights of thousands of autumns, the sorrow of a summer. The blue wind is accompanied by the sea of ​​clouds, and the blue wind is accompanied by the sea of ​​clouds. (I wrote it blindly, don't take it seriously)