Pretty lousy artist. I've been looking for any likeable post with Blue Archive's Shiroko to raise up a point on her never having a heterochromia tag (it's always for Hoshino, except for the brilliance of the situation with post #1110815).
Not an easy job. But this artist just goes and screws everything there is to screw.

Anyway, shouldn't Shiroko's posts where both eyes are visible and done in accordance with the original work, e.g. post #1132523-- be tagged with heterochromia?

IMO, heterochromia only refers to irises, while in Shiroko’s case, it’s her left pupil that is white (is she one-eyed?). Therefore, I don’t know if such a tag applies here.