The devilish master (Fate/Grand Order x male reader)

You are the son of Dante and Lucia. Your father went on his last mission when you were 6 and your mother was killed by a group of demons. You and your twin brother were separated and both of you suffered and experienced hell, but the difference is you were saved by two people A man named Shirou Emiya and his wife Rin Tohsaka. They took you in and you were raised by them along side their son Ritsuka. You both joined Chaldea on a whim and you both met a girl named Mash Kyrielight. What will happen next?