Shin Ikezawa is a Japanese manga artist who works as one half of a husband-and-wife creative duo alongside writer Yuu Tsurusaki. Operating under the additional pen name Chibimaru, Ikezawa is best known as the artist for the manga series Fantasy Bishōjo Juniku Ojisan to, which is also titled Life with an Ordinary Guy Who Reincarnated into a Total Fantasy Knockout. The series began serialization on the Cycomi digital platform on November 18, 2019, with the first compiled volume published by Cygames on April 17, 2020, and distributed by Shogakukan. The manga received an anime television adaptation that aired in 2022. Prior to creating this original work, the duo collaborated on the manga adaptation of the anime Charlotte in 2015. Shin Ikezawa has been active as a creator since approximately 2012. The artistic identity of the duo is characterized by comedy-driven fantasy romance narratives that frequently employ gender-bending and isekai tropes, as exemplified by the premise of an ordinary middle-aged man transformed into a beautiful girl after being summoned to another world. The collaborative partnership of Ikezawa and Tsurusaki as a married couple working together in the manga industry represents a notable aspect of their professional identity.