Seriously?! This is one of the most orignal plots i'd ever seen in anime. 당신 dont see many 아니메 with alchemy well like NONE. Most other plos in 아니메 are common like Ninjas, shinigami, vampires, werewolves, aliens, ghosts, and a ton more.
Technically its in the 망가 currently, shouldn't be too long before it happens though, but Fairy Tail. 2 Timeskips were used and for no reason but to troll its audience 또는 for the 2nd one, to 옮기기 the plot along.