The Rest is Up to You ~Since God Defeated The Final Boss In The Tutorial, I’m Going To Live My Life However I Want~ is a Manga/Manhwa/Manhua in english language, Manga series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

An ordinary Japanese male office worker is suddenly brought to the divine realm. After being transformed into the body of a beautiful girl by the hobby of a goddess present there, I am given the mission of defeating the final boss in order to settle the god’s personal grudge… or so I was supposed to do. Soon after my reincarnation, the goddess who possessed my body killed the final boss in an instant, and my final target disappeared in an instant!? And after that, I’m told to do as I please in this world. Wait, seriously? I can really live however I want!? Thus begins the isekai life of a reincarnated beautiful girl, who was originally a man, faithfully indulging in her desires in a world where the final boss was eliminated in just one minute