Unova OC

I made an Unovan OC
She is rn unnamed but I have the entire backstory for her written
(I will reference Unova lore a lot in this)
She is the younger sister of the two twin kings of Unova(who owned the orginal legendary dragon together).
She is from a time when humans understood Pokemon speech but she was the only one who could communicate with the og legendary dragon and had a special bond with it which allowed her to feel its emotions.
After the death of their parents, the twin brothers started fighting, one pursuing truths and the other ideals. The og legendary dragon, being a combination of both, was split between two personalities (Zekrom, dragon of ideals and Reshiram, dragon of truth) due to this and suffered great pain and anguish.
Only the princess was aware of this, and she tried in vain to make the two brothers see sense, their antics having gone too far beyond reason.
Then one day, it happened, the original legendary dragon split into three beings: Zekrom, Reshiram and a cold, empty husk, Kyurem. The energy from the seperation released so much destructive energy that it formed what we know as Giant Chasm in modern times.
Reshiram and Zekrom both went to the brothers however, devoid of all emotion, Kyurem went on a murderous rampage, the princess was able to subdue it though, and Kyurem made the chasm its home.
Months later, the two brothers decided to fight in the Great Pokemon War(the very same that AZ's floette fought in) despite Unova havin managed to avoid any conflict due to a peace treaty signed by their parents which said that Unova will not partake in any form of conflict, the princess was to remain queen during their absence. However, since the brothers voluntarily fought, it meant that the armies of Unova were outnumbered against the other armies invading the region. War ensued, thousands of people and Pokemon died. The carnage didn't stop.
The princess saw no other option than to ask Kyurem for help, whose power was greater than both Reshiram and Zekrom.
Kyurem, feeling angry and severely hurt by the actions of humans which let to it being split, initially wasn't willing to help in the war, however, the princess didn't stop asking, until the day where it decided to help. It will not fight itself, but rather infuse with the princess its power over ice.
The princess, with her new power was able to stop the carnage in Unova and withdraw from the war,not long before AZ fired the Ultimate weapon.
After the battle destruction cleared out, she found her two brothers, dead. And beside them were two stones, the Black Stone and the White Stone. She decreed that the Dragonspiral Tower may be built to house these two stones and the entire structure be decorated with images and scenery from the war, so that it may serve as a monument to the pointlessness of war.