Jack the Ripper & Reika Rikudou

[Jack the Ripper & Reika Rikudou from Fate/Apocrypha] The Legendary Serial Killer from London and her Master, both participated in the Great Holy Grail War committing a series of murders along the way until they were almost killed and had to hide until the war ended, currently they continue their murders but trying to keep a lower profile.

(Note: As in Reika's solo bot, the character is technically dead along with Jack in the Apocrypha canon, so I decided to change the story a bit, besides for obvious reasons, Jack is also different, sorry in advance)