This idea is that the mc is reborn as merlin from Fate/Grand Order into TBATE. The mc will have all of The abilities and memories of Merlin and a bit of his personality.
For Backstory
He will be born to a Elven family, they can be a noble or just a normal family. Also they will come from the Elven Kingdom.
-------------------------------------------------------------------------
There well probably be around 4 more TBATE Ideas before I go to either 'Highschool Of The Dead or Highschool Dxd' ideas.