In a world in which humanity never parted ways with the Gods and became the dominant species, an unexpected variable enters to disrupt its delicate order. After regaining his memories as the nameless hero King of Fakers, Emiya Shirou will have to teach this world why humans cannot be underestimated, and show them all what means to be a real hero.
"May you find happiness in the next life." That was easier said than done, even more so for a horrible villain like him. Or so Yuuki Shirou thought before meeting a certain pink-haired alien and being introduced to a bizarre world filled with aliens, servants, and absurd situations. But maybe this time, he will achieve that beautiful dream he threw aside a long time ago.
Without knowing how, and with fuzzy and confusing memories, King of Fakers ends up in a world quite different from his. Now, the EX rank density is facing something he never imagined. A pretty dominant little sister, and having to go on dates with girls who have powers at the level of a heroic spirit to save them. His luck is still E rank.