Rait is the top ranked assassin in a VR MMO called "Virtual Life Online", using his production skill to make poisons and explosives that can kill high level players. While playing the game, he is contacted by a big breasted goddess by the name of Mizes who hires him to assassinate the evil god Masura Zull. Rait accepts and is then isekaied to another world where he uses his OP powers to fight bad guys, monsters and add girls to his harem