Casiopea Erda (カシオペア座のエルダ) and Dolphin Mii (アリシア美衣ベネトール).
From Saint Seiya (聖闘士星矢) / Saintia Sho (セインティア翔).
I made this drawing for a joke in Spanish (because the names of the two girls sound like "sh*t" in Spanish).
Spanis -> https://www.patreon.com/posts/solo-espanol-mii-29929418