Olivia Vieweg is a German cartoonist and author, also a cartoonist and editor of comic anthologies. She lives in Weimar, and worked as an illustrator of the children's book series Vampirinternat Schloss Schauerfels and colorist of the comic series Zilverpijl. An early creator in the German manga scene, she cites Sailor Moon as one of her strongest creative influences.

Hirara Natsume grew up in Chiba, Japan and used to draw shoujo manga for Japanese magazines. She now lives in Germany, exploring her own cross-cultural experiences and telling a story for young manga fans around the world through Bibi & Miyu.