This guide is for the Mistiqal Maiden request in Soul Hackers 2. You can start this quest by talking to the Mysterious Girl just outside of Cirque du Goumaden at the Roppo Realm after clearing the Central Line during the story.
Location: Roppo Realm
Ideal Lv: 15
Reward: Mistiques tradable
Give the Mysterious Girl a Mistique
Speak with the Mysterious Girl and agree to help her out. You’ll need to bring her a mystique that can be received by leveling up a demon up to where they have no more moves to learn. Once you have misitque you don’t mind parting with, speak to the girl and select it from the list. This will complete the request.