Immortal Mirror is actually several stories encompassing the same world. However, it originally was called “7 Series” and had different characters and a different premise.
It originally was a story of Earth and its otherworldly half, a dimension that contained super powerful beings that can control fantastic powers. “7 Series” also had multiple stories and they mostly focused on this other dimension, but there were some times where they cross dimensions. It also had dragons and other mythological based monsters, themes, and names.
Each story followed one of seven characters, one representing the seven sins. But it wasn’t too long after that I found about “Nanatsu no Taizai (The Seven Deadly Sins)” and “Servamp”. Those two manga were mainstream stories that had characters that represented the seven deadly sins, so I scrapped most of the premise. It was until 2014 that I actually renamed it to Immortal Mirror so I wouldn’t have headaches later.
Below are some links to my “A Look Back” collection for “7 Series”. Some of the stories had their story skeleton fleshed out, including characters and other world building material. Some never got beyond the idea stage.
