Gurihiru, aka Illustrator Unit Gurihiru and Gurihiru Studios, is a Japanese illustration team, composed of artists Chifuyu Sasaki (workplan design, pencils, inks) and Naoko Kawano (workplan design, colors, webdesign). They are based in the city of Sapporo (Japan). The pair have worked in several Marvel Comics titles, such as: Power Pack, Fantastic Four, and Gus Beezer & Spider Man. They have also worked in the Avatar:The Last Airbender comic series, beginning in 2012 for the comic book, "The Promise"