Kiss×sis (Japanese: キス×シス Hepburn: Kisu×shisu) is a Japanese seinen manga written and illustrated by Bow Ditama. It began serialization in Bessatsu Young Magazine (now Young Magazine) on December 11, 2005 and has since been published into fifteen volumes by Kodansha. The manga was later adapted into two animated series by Feel; a twelve-episode television show aired from April 5 to June 21, 2010 by AT-X, and an original video animation series from December 22, 2008 to April 6, 2015.