[Crossover + FGO] Fiends Run Amok

What if Solomon's Demon Pillars came in several versions... There's the Demon Realm version (How much research would I have to do? orz) There's the transmigration version, the Seventy-Two Pillars from another world (I'll have to make this one up myself) And there's the Familiar version, the magical Goetia type that can combine all 72, with materials drawn from the first two versions (I'll still have to research it, but I can probably make most of it up, more or less?) Of course, not every version will get its own separate storyline. King Solomon says, "I can't even keep track of how many sets of Demon Pillars I have." Doctor, what do you think? Dr. Roman: "So here's the question: which version is going to destroy the world? I only have one, and no matter how many times I blow it up, it just won't run out!" Also known as: [The Chaldea King Fan Club], [Which Demon Pillar Is Trying to Destroy the World Today?], [A Seemingly Grown-Up but Actually Childish Person Wanders the World], [Doctor! Another World Is About to End!], [The Demon Pillar Did It], [Everyday Jealousy in Chaldea], [The Doctor's Pampered Daily Life], [Where Has King Goetia Run Off To Now?], [I Don't Treat My Dad Like a Dad: A Submission from an Unknown King Goetia], [I Don't Treat My Dad Like a Dad 2: A Submission from an Unknown King Goetia's Son], [I Don't Treat My Dad Like a Dad 3: A Submission from One of King Goetia's Magical Formulas] Roman has no fixed pairing, but the story is full of King Solomon fans. Other pairings may be male-female, male-male, or female-female! I realized my wording was misleading and caused some confusion. I wrote that the Seventy-Two Pillars in the transmigration version were human, but that's not the case. They aren't all human! Most important of all!! The characters in this story are extremely out of character. Read with caution!!!! Theme: