Monthly Sunday Gene-XMonthly Sunday Gene-X.

Monthly Sunday Gene-X (Japanese: 月刊サンデーGENE-X, Hepburn: Gekkan Sandē Jenekkusu), often abbreviated as Sunday GX (サンデーGX), is a seinen manga magazine published by Shogakukan. Like many other manga magazines, it is an "anthology magazine", with each issue featuring new chapters of several manga series. The series are also published in tankōbon form under the Sunday GX Comics imprint.