Mars Trailor

As 18 year old, Mars Trailor a dark phoenix, gets exiled from the nation of I'Lexio. She is given hope by the arrival of a letter addressed to her by an unknown person, requesting her to buy a strange liquid. Which turns out to save her life. the next day she has returned to I'Lexio but never expects a war that died away a decade ago would re-ignite after her arrival. Does she really start the war or end it?