When the shinigami's scythe is summoned, she always has it wielded in her hand until she dismisses it. While she swings it without effort through use of her powers and the fact that it is a part of her as well, it is also secured around her hand and arm with bramble. Thorned vines wrap around the weapon's handle and her, keeping her connected to it even someone were to try and knock it away from her.
For shinigami Kanade, it's a rare occurrence to get her to show much emotion at all, unless it's of the mournful variety. Many of this Kanade's reactions are subdued and quiet, and she spends most of her time existing as a much more sorrowful figure that simply feels more empathy for the souls she's seen come and go than she can handle much of the time.
Not to say she can't smile or even feel amusement and other things like that, but they're very quiet when expressed.
I wanted to further detail on a previous headcanon post for this, shinigami Kanade does in fact, in her usual form have a small pair of wing-like appendages that come out from lower on her back. Since she can alter parts of her appearance, she can also make these larger if she wishes, or even choose not to show them at all.
Even when disguised in her more human appearance, she can bring these into existence, though the chances of that are even rarer.
Shinigami Kanade can change details of her appearance as she pleases, as long as she doesn't change her base identity. She can have different hairstyles, materialized in different manners of clothing and accessories, and can even alter certain details onto her appearance in relation to what she is and how she is perceived by others (a primary example being viewing a deity with wings, giving her the ability to materialize wings, and even use them. She might actually be seen with them on occasion, she admits she likes how they look).
Shinigami Kanade is not fully what you would consider a genuine god, but she's up there. She's more imperfect than anything, which might stem from her overattachment to people and her unusually high sense of personal empathy that makes it genuinely impossible for her to be the kind of impartial, unbiased guide she's meant to be.
Is she completely incapable of being impartial? That's definitely not the case. But even in those cases she experiences an emotional recoil that she isn't supposed to be experiencing.
"It's all right now. You must know why I've come here."
AU based off BloomFes Kanade. An unusual Shinigami. She's paler than the usual Kanade (somehow), the blue of her eyes is more the shade of Ice Blue, and her ears, while not any longer, are just slightly more pointed. In her actual form, she's always seen as this.
Kanade has the ability to roam among the living in disguise. What notably changes is her ears look more passably normal and the figures that normally hover by her head become a hairclip instead. She still has access to anything she's normally able to do, even when disguised, but she discourages herself from using her powers on the living plane unless she absolutely must, or unless she's come to collect someone.
Her abilities are most easily explain as a type of "magic," though in reality it's simply not magic. It's otherworldly and specific to her, and is the extension of her ability to bend the space around her as she sees fit. She has strict personal rules on its usage, and it normally adheres strictly to her duty, and only her duty.
She detests getting violent, but if she must, she normally restraints, traps, or will strike using what's perceived as bone (bone cages, jagged strikes, what have you). They do not come from herself, but when you watch closely, if you even can in this situation, they shaped as the bones of the skeletal structures of various existing creatures, most commonly creatures of this earthly plane, but there may be on rare occasion, strange and frighteningly obscure pieces present.
She hardly even shows her true nature. While her most easily perceived real body is what it is, she hides something else underneath that visage, out of the concern for the human ability to perceive such things without losing grasp on reason. In specific situations though, it might show itself in small amounts, when her hold on herself is least stable...
What makes her unusual, is her sense of empathy and compassion. Bound by her duty as a shinigami, Kanade views herself as cursed by it rather than aligned with it, and often feels too much sympathy for the lives she has to watch and collect. She's forgotten the scope of her emotions beyond sorrow and apathy, and on extremely rare occasion, outrage. She does have desire to re-acquaint herself with those walking among the living, but she struggles between a sense of strict duty, and a sense of personal compassion and curiosity, as well as the fear of what feeling her barred away other emotions will do to her.
These aren't the only fears she has, and many of them involve the belief she must keep herself detached from anyone else because her personal attachment and involvement will only guarantee their own demise.