陰鬱な世界まいりす→ mylist/24404584 mp3→ https://www.dropbox.com/s/yejbd8trl3fvo8d/gloomy%20world.mp3?dl=1pixivfanbox → https://www.pixiv.net/fanbox/creator/579558
http://www.nicovideo.jp/watch/sm34513543