[Demon Slayer: Kimetsu No Yaiba] Becoming a Spirit

Having been harassed by people sent by Wuhan for nearly a thousand years, I, a flower that became a spirit, had to give up the peaceful, healthy and meaningless retirement life that a plant should live, and go down the mountain to kill the source of all evil who dared not show his face. As a result, the coward Mumei hid with Twelve Ghost Moon, and the invincible me who had nothing to do, became the mascot of the Demon Slayer Corps. ... Seems pretty good. *The heroine, Cyan Higanhua, becomes a spirit, her martial arts reaches its peak at the beginning, her character grows, she is relaxed, her character will not die after the plot begins, and the boss leads her around without any brains. Purpose: Kill ghosts with the protagonist group.