So, it's been a week since I found and shared a tidbit of Sui, and since then things have been going extremely fast, and has spread all over. Even if it didn't contain anything, the NND leak renewed interest in looking through stuff. It is likely that the original person shared as being Suisei is not Sui herself, but just a relative (will update my other post).
People went through a lot of references, and managed to connect her name through many difference sources, including information provided by Cover themselves, that the true Suisei has been found. And by extension, Anemachi.
Left: Anemachi
Right: Suisei
Video of Suise and Anemachi during a shopping trip in 2017