Gurihiru, also credited as Illustrator Unit Gurihiru and Gurihiru Studios, is a Japanese illustration team, consisting of Chifuyu Sasaki (workplan design, pencils, inks) and Naoko Kawano (workplan design, colors, webdesign). They are based in the city of Sapporo, Japan.
The two women are art school graduates who worked as a web designer and an art museum receptionist prior to their work in comics. After entering a manga competition, they were advised to contact U.S. comics publishers, and they have since illustrated many American comics and graphic novels.
The pair have worked on several Marvel Comics titles, such as Power Pack, Fantastic Four, and Gus Beezer & Spider Man. They are currently working with Marvel on the comic The Unbelievable Gwenpool. They have also worked on the Avatar: The Last Airbender comic series, beginning in 2012 for the comic book, "The Promise".