You are not magical, at least, not in the sense that Fae, Murkborn, and Ephemeran would think. You are mundane and yet somehow you have always been tied to the wood. Stories exist all across humanity of people who are born with the same soul but walk through different spaces in the world. Some have the happenstance to meet both sides of this soul and will comment to them that they have seen someone just like them somewhere else. However, it is rare that these people ever meet. Friends and family will comment that the person they know has always felt a little ephemeral, whimsical, a daydreamer perhaps. And if you asked one of these people themselves they would say they have never truly felt like they were themselves, but always as if something was missing or off. Like perhaps they are half of who they were meant to be.
The truth is that sometimes strands of Fate split in the weave, and their branches retain the same person but spread to two different identities with two different names. If you were to look back at the loom, you would see that they are in fact one soul and one person. Because of the way these branching paths deviate there is never any real way for these two people with one soul to meet. Fate wants to correct itself, and yet somehow can't, but there are circumstances involving the strange and the magical that can pull on Fate and bring this one soul back together. You, are in fact, one of these twin-souls, and you have come across the impossible in the Wood: the other you. And you have done the even more impossible: you have grabbed onto the strands of Fate and pulled them back together, becoming one.
If somehow such a being were to find this path and make this choice, then they would retain both of their identities and memories. But they would also retain - or be forced to cast off - their families, friends, jobs, and obligations. It is perhaps good then that the twin-souled struggled with their half selves to make such connections, but some in fact still would exist.
You have two Paths. Choose a path for each side of your soul that brought you into the Wood. You find one of them more natural now than the other, so choose that one as your Affinity.
No twin-soul that reunites (not that any have heard they do) comes away from that unscarred. The separated strands stay separated and the weaving of them back together is rough and painful, but the choice that you have made is worth it. You no longer feel like half a person, but you can also feel your strand of Fate pulling at itself and you.
You feel as if your strand of Fate is constantly choking you. This often makes it difficult to speak and breathe and you constantly seem out of breathe to those around you. You cursed on all social interactions that require speech as well as holding your breath. However, your constant resilience to push through the feeling gives you +1 Might.
People call you clumsy but that is because your strand of Fate seems to remain constantly tangled. You can see these threads and in your avoidance of them you are often running into things, dropping items, or are seemingly all too distracted. You are cursed at sight-based perception and are never immune to ambush, but you are shockingly agile when you are focused on a task. You have +1 Agility.
The edges of your strand feel like they are constantly being grated on by sandpaper, leaving you anxious and paranoid. You are cursed at resisting any emotional influences and are particularly susceptable to both the lies and possesion of the supernatural. Fae attempting to deceive you are blessed as are spirits attempting to possess you. You are always vigilant, giving you +1 Wits.
Even though you have pulled your soul back together, your strand of Fate never fully rewove. You struggle both with your sense of self and with defining your connections to others. You are incapable of buying Connections to NPCs and any Connection you fail to use within four game sessions has to be re-purchased. You spend so much time pulling yourself together that you have +1 Heart.
Your strand of Fate feels pulled so tight it can snap at any moment. Any time you draw a Tower, scene you dissociate and have an extreme emotional reaction of your choice such as catatonic fear or an outburst of violent anger - work with your Talespinner and table to make sure this fits the current moment and everyone consents. However, in most moments you manage these feelings with a strong sense of calm, giving you +1 Poise.
Choose one connection from each side of your life that is so important to you that you continue to retain them even in this new fully realized existence.
Since you are human, you do not get access to any Lores, but you are capable of walking the path of sorcery. In fact, the way to finding your own defiance of fate through such magics seems to call to you strongly.
You may choose any perks available to humans except Noble Bastard. No one with fae blood of any kind in their ancestry ever becomes twin-souled.
The Magical with the Mundane
No human Offspring is ever twin-souled. Their strands of Fate are so strong that they cannot split and unweave into two.
However, the twin-souled are fully capable of gloamspinning, but many choose not to. Unlike other people who feel like they have completely gained another self that they have added onto their own, the unique circumstances of a twin-soul's births means that they have to give up part of themselves to make room for the fae to bind to them. If you choose for your character to gloamspin, you retain only one of your paths and although you have the memories of that half of a life they become fainter and fainter over time as if that side of you never truly existed.
For Murkborn, the situation is vastly similar, although eidolons tend to not choose those who have walked a hair's breath from the ledge of Fate. However, in the cases that one makes that unfathomable choice, you come back to life with a bit of you missing. Like with gloamspinning, choose the path that you keep as the other must have fluttered away into Tithe or the Hereafter. Your memories of that life also slowly begin to fade over time, although it's possible you could find the other piece of you in the Root or Tithe somewhere…