The Post-Apocalyptic Club (世（せい）紀（き）末（まつ）苦愛（クラブ） Seikimatsu Kurabu) is an organization within Goha 7th Elementary in the Yu-Gi-Oh! SEVENS anime. They appear to be fans of apocalyptic and post-apocalyptic fiction, dressing in costumes inspired by said media.[1]