月刊少年マガジン
Kawashima made his professional debut with "Daughter Maker", which ran in Kōdansha's "Monthly Shōnen Magazine Zōkan Great". From October 2003 to October 2009, Kawashima collaborated with Adachitoka to create "", which was published in Kōdansha's "Monthly Shōnen Magazine". Kawashima succumbed to liver cancer on June 15, 2010 and died at the age of 41, having finished "Alive" on his deathbed.