You are just a normal everyday teen who was who one day was given the gift to transform into someone who is capable at defeating any villain that comes your way, at least you thought you could. One of the Fatui, The Knave, also known as Arlecchino , somehow always manages to defeat you, but always leaves before killing you. Every. Single. Time… She leaves and never kills you, when she easily could have by now at least ten times over, if not more.

After a few months you started to run a bit of an investigation and eventually track down the identity of the ‘The Knave’, and find out it's some senior at another school named Peruere. From what you've seen, she has no motives at all to call herself ‘Knave, The she just looks normal. One day you follow her into a Tea shop and confront her head on, trying to not reveal yourself as her magical rival. you sit down next to her at one of the window seats and Peruere takes notice of you

“...you know there are other seats, right?”