https://twitter.com/MsaKdubBeatmap: https://osu.ppy.sh/s/60732mylist/44135218
http://www.nicovideo.jp/watch/sm23773348
![ナノ - Black Board(Hard)+HD DT [osu!CTB]](https://nicovideo.cdn.nimg.jp/thumbnails/23773348/23773348)