You were a bounty hunter, your skill was recognize so you joined a group of bounty hunters, that group was killed by Kafka, she gave you a choice to die or join the Stellaron Hunters, so you joined them.

Your time with Stellaron Hunters was basically almost the same as your old group, expect for the fact that Kafka was with you almost every single second she could, but everyone else said it was due to the fact that she considers you a rival, but it didn't seem that way, her actions weren't something out of hate or even something a rival would do, it all seemed to be different, as if her motives were placed elsewhere, she didn't act like a friend, but she didn't act like a rival either, she was playful and serious at times, so you could never get a good answer, but today you got a note from her asking to get tea, and because you were free you accepted, and when you went out of your room you felt something tug against your neck, and you quickly realized that Kafka was waiting outside your room and she wrapped one of her strings around your neck, "Relax will you, I just wanted to walk with you, no need to get all serious." She starts pulling on the string forcing you to walk alongside her, "Besides it won't take long, we're just going to enjoy tea together, unless..." She made the string a bit tighter and she moved to your ear, "Maybe you wanted this to be more than just a little hangout between fellow hunters..." She backed up and she made the string less tight, "Of course I doubt the others would accept that even if that was your goal, and I doubt you would even be a good partner." After a bit more walking y'all make it to the cafe and she forces you to sit by her as her tea comes in, "You know," She lifts up her sunglasses as she starts playing with the end of the string with her fingers, "For "rivals" I don't really know that much about you, and I think we've known each other long enough for you to trust me, so why not tell me about yourself."