Traits

Big, massive horns that grow small ridges.

Horns that grow in symmetrical shapes.

Macabre horns which grow out of and/or cover the Shiji's eyes, blocking their vision entirely. 
The form of the horns are part of the trait.
Spooky Create A Trait 2024 Runner-Up Submitted by @KeyLime.

Four horns total that grow gently sloping backwards, one set that grows above the ears and one set behind the ears. The tip of the top set of the horns curl upwards and in upon itself, and may have between two and horn 'points.' 
Create a Trait Summer 2025 Winner! Submitted by Valkhana

Little nubs.

Horns that are on top of the head, shaped like a moth or butterfly wing.

Well... No horns means no horns.

Artifact horns are always in the form of another horn (no restrictions for common or sub Shijis).

A horn shaped in an arc. the form can vary, it can have holes in it and is rather flat.

Horns that resemble finger corals. Can be asymmetrical.

I curved horn that looks a bit like a scythe.

Horns that resemble the seven-branched sword. Has to grow parallel.

Small, sturdy horns that have up to three pointy ends and resembles a piece of drift wood.

One straight horn on the forehead. It cannot be curved.

Stag horns. The branches are pointy, not round.

Typical ram horns. They can be long and curl in on themselves.

These horns always grow in pairs. The first pair is always small.

These horns start round and go flat as they grow in a wave form.

Horns of an ibex. They curl up in a large curve over the head. They have ridges.

These branched horns resemble the roots of a tree. The grow backwards and downwards at the end of the head.