Apocalypse Harem: No Fear, All Charm

DramaBox synopsis

My name is Ethan Miller. After transmigrating into a bizarre post-apocalyptic world, everyone else trembles before phantoms. However, all I see are stunning beauties. In the Crimson Chapel, I kiss the Crimson Bride. In the Scarlet Moon Infirmary, I spoil the Scarlet Moon Queen silly. In Weaver Inn, I charm the Dread Spider Empress into becoming my wife. Deadly phantoms all become part of my harem. In this world, I'm the real horror!