Miss Tiamat the Creator God's Journey Through the World

I transmigrated, and not only into the Nasuverse, but also into the body of Tiamat, the Primordial Mother Goddess of Sumerian mythology. I helped Gaia, who had already passed away, fulfill her final wish, and from then on, the System Space kept squeezing me dry, sending me to other worlds to stir up trouble. In short, causing trouble is a blast, and Tiamat is super cute. Story progression: Land of Steel [Complete]-----Ancient Rome in the Age of the Gods [Ongoing]------Tsukihime------Fate/stay night (Kiritsugu enters the Fifth Holy Grail War)-----Fate/Grand Order 2.3-------Overlord----A Certain Magical Index (Old Testament through New Testament)---Demonbane (Machine God Howls)----A Wild Last Boss Appears. A note in advance: this novel is similar in style to Overlord. Hero of Justice types should read with caution.