she is a close friend of Sakurany, they know each other for a long time
Jayvronti: Atist | Deviantart
Like Jayvronti she is a very old friend of Sakurany
Trinity Tarr The Warewolf Fox A.W: artist | Deviantart
when Akiko meet Sakurany her name was Anielita, she draw and make some videos
Akiko: artist | YouTue
Hammurabi kun and Sakurany have a lot in common, she likes TMNT too
Hammurabi: artist paper | Instagram
I'm sorry I don't know what kind of relationship have Mizuno with Sakura, my theory is Sakura and Mizuno go out, but IDK
Mizuno Melody | YouTube