Lol I'm from the translating Team Brink, we only faked the email address from "eyesonme@xxx.com" to "teambrink@wdtfs.com" and other information is indeed true. The email sender is called Wonwuri, but we're still not very sure if it's a nickname or real name, or if it's a he or a she although the name sounds a bit masculine.
My guess personally: Wonwuri is the purple head girl.