How long have you known of your system / When did you form?
Oh that's a complicated one lmao.
We'll just answer the simple part, we do have an idea of when we formed but that's something you gotta ask us alone when you get to know us better.
As for when we realised, it was the early 2010s, like, around '11 we think. We'd joined an imageboard known as ponychan, the place that was set up when 4chan banned mlp content. We ended up dragged into a funny RP thing that got out of hand in a good way, Sea and Cari were both RPing as Rainbow Dash and had no idea they were a both at the time, Sea noticed sometimes her posts weren't formatted the same thanks to how rapidly things were moving, eventually pushing in on that inconsistency revealed Cari to her and we've been aware of our systemhood since then.