I'm not sure about the artist name that I tagged this with. On their Twitter account, their names are "Chouko_" (and I can't use an underscore as the end of an artist name) and 蝶子 (which translates to Chouko, or literally "butterfly child"). I would have just tagged the artist as "Chouko" but that name is already in use for a different artist. I'm not sure if this artist has any other accounts, either.