Alright, a few things.
The items such as the Fairy Ocarina, Fairy Slingshot and Kokiri Sword were not common or standard Kokiri items; they were specific, unique objects. Most slingshots are just 'a slingshot', most swords are just 'a sword' or whatever name the owner decides to give it.
While her personality is quite doable for her, specifically, the Kokiri as a whole have become much more grim and adult in recent years. They did not aid the Resistance by merely helping wounded; they helped in the physical, violent revolt from the start (albeit to little effect, given their stark lack of understanding of true war) . Furthermore, while that they were wiped out by the military is an outright lie, the military did attempt to do so and came extremely close-and the Kokiri have lived in hostile wartime conditions since. They now live in the Lost Woods among beings that seek to harm them in an unpredictable, shifting forest while still aiding the Resistance and thus engaging in warfare-much more effectively now as they have had to. Spears and bows are common among them now and their guerrilla tactics are actually expertly-and lethally-performed now. They have been forced into child soldier-like conditions, only with the caring support of the fairies and retaining the freedom of self-governance, rather than lorded over by a violent authority like usual child soldiers.
Magic has three common forms and one rare form, primarily, as I will add to the original post. They are generally categorized by where they draw their power from. Divine magic that calls upon and channels from divinities and natural forces, such as priests do from the gods; Arcane that taps into the ambient energy around them, pulling mana from the air or other sources through practiced formula learned through research and understanding as most learned mages do; and manipulative magic which revolves around affecting the magical energy flows around them, rather than ejecting magic as most others. The utter rarest and least understood is innate magic which is when a being directly releases magic from themselves, relying on their own magical reservoir as their source.
Song magic is generally a form of manipulative or, as it called in-universe, 'wheel magic'. What is special of magical songs is that the song is not merely a focus for woven spell formula or released energy; the pattern of sound and rhythm taps into the energy flows of the world itself, like tugging on the string of an instrument, and thus altering it. For this, song magic is potentially extremely powerful-however, utilizing it requires the song be in harmony with the natural force and thus the more specific and perfectly played, the greater the effect.
There is a certain degree of similarity in our cast as to the previous iteration of this roleplay. Two of the most active and compelling characters last time was an out-of-favor darknut lord seeking to garner strength to return and a strong-willed Kokiri girl. The scene where he ended up picking her up to carry her to safety was awesome-such a wonderful dynamic. I wonder if something similar will happen this time around? :3
Otherwise, it works. The Unicorn bit is interesting as well, considering that, to the ancients, the unicorn was actually a fierce and savage creature with an affinity towards women more akin to that of dragons than out of shared purity. Perhaps a suggestion of character development...? Or not. It works well, either way~<3