Artist. One of the developers of doujin video games "Yoiyami Dreamer":[https://rumia.hungry.jp/yoidori/] & "Yoiyami Dancers":[https://store.steampowered.com/app/1998530/_/]. 

Japanese name: 六合ダイスケ (Rokugou Daisuke)
Solo circle & site name: 以絵会友 (Ikai Kaiyuu)
rokugou daisuke