Hi, could you do a headcanon of Quanxi and his girlfriends x a demon reader who is able to teleport from mirrors?
Quanxi with a Mirror Fiend reader
A/n: I'm not asking Quanxi and the fiends to change their ways, because they're perfect as they are. Thank you for requesting, I hope you enjoy!
-Quanxi and the fiends first met you when you helped them out during a mission. The job was to hunt a Devil for the government, which was easy enough for the most part. However, things went awry when the Devil managed to grab a hold of Tsugihagi, threatening her if they didn't let the Devil go. As Quanxi was trying to decide what to do, the Devil took a step back into a store window. At that moment, a pair of hands holding a chain reached out from the window and choked the Devil with it. Tsugihagi ran back to the others as they watched the chain tighten around the Devil's neck, and eventually snap its head off. That was when the hands retracted back into the mirror and you stepped out, introducing yourself as the Mirror Fiend.
-At first, Quanxi isn't sure whether to trust you. On one hand, you saved her girlfriend's life. On the other, you are still a Devil. That is until Cosmo runs up to you and hugs your arm. Apparently, she was the only one aware of how long you'd been watching the group, unable to tell anyone else due to only being able to say the word "Halloween", and knew you weren't a threat. Because of Cosmo's actions, Quanxi lets you live...on the condition that you join her relationship with the fiends.
-Having a partner that can teleport through mirrors is a big help on missions. Being able to simply move from one location to another just by stepping into a mirror helps Quanxi save a lot of time getting to her missions. It also makes it easier for her to go places with you and the fiends without people freaking out over their appearances.
-As well as this, you're also a big help during fights. While Quanxi is usually able to take out any strong opponent using her Hybrid form, she prefers not to do this too often because of the blood loss it causes. That's why you, her and the fiends developed a strategy. She and the fiends would draw their target close to a mirror, either through attacks or by cornering it on all sides. That's when you'd jump out and strike the Devil from behind, killing it with a surprise attack.
-Cosmo and Pingtsi are the most comfortable travelling through your mirrors, with them being actively excited to do so. Cosmo because she's already more familiar with you than the others, and Pingtsi because she always enjoys learning new things, and wants to know what the mirror world looks like from the inside. Quanxi is more indifferent about travelling through them, seeing them as mostly just a form of transport, though she does still compliment you on your skill and how useful it is to not hurt your feelings. Long is more hesitant to the idea of travelling through your mirrors at first, and needs a little time to open up to the idea. Tsugihagi is the most reluctant, to the point she can't do it unless one of the others goes with her. She assures you that it's only the mirrors that freak her out, not you yourself.
-From time to time, you enjoy pranking your girlfriends by jumping out of mirrors at them. Of the fiends, Cosmo is the least affected by your scares, as she just smiles, gives a cheerful "Halloween!" and pulls you into a hug when you do it to her. Pingtsi always lets out a small yelp, no matter how many times you do it to her. Long and Tsugihagi show around the same level of reaction, but in very different ways. Long ended up being so startled from you jumping out at her that she accidentally breathed fire on you, though she was thankfully able to cut it short when she realised it was you. Meanwhile, when you jumped out at Tsugihagi, her whole body jumped a little and she began shaking in shock, with it taking a few minutes to calm her down again. In both instances, you had to apologise to the fiends and promise never to do it again. As for Quanxi, she doesn't show much reaction at all. She simply keeps her same stoic expression as she gently grabs your chin and gives you a kiss on the cheek with a "Hello, dear." or a "good morning"
-If you're nearby and they don't have any mirrors on hand, Quanxi and the fiends sometimes use your reflective body to check their appearance or do their makeup if all the other mirrors are being used. The fiends may be corpses but they still want to look the best they can, for themselves, for each other and for you. As a thank you for your help your girlfriends always give you a kiss or a hug after they're finished.