Artist.
Japanese name: 竜宮ヤッスー (Ryuuguu Yassuu)
The other name: 有坂ヤッスー (Arisaka Yassuu)
Circle & site name: 空×少女×etc (Sora to Shoujo to etc)
https://www.pixiv.net/users/5373882
https://www.pixiv.net/stacc/tomoyasu0028
https://twitter.com/yassu08123
https://twitter.com/intent/user?user_id=231062482
https://yassu08123.booth.pm
https://seiga.nicovideo.jp/user/illust/19521628
http://com.nicovideo.jp/community/co1881619
https://www.nicovideo.jp/user/19521628
https://pawoo.net/@tomoyasu0028
https://pawoo.net/@yassu08123
https://pawoo.net/web/accounts/166537
https://pawoo.net/web/accounts/166603
https://sketch.pixiv.net/@tomoyasu0028
https://www.tinami.com/creator/profile/56580
https://ask.fm/yassu08123
http://twitpic.com/photos/yassu08123
