You can get your outfit by using an akatsuki outfit scroll or an anbu outfit scroll . They are available in the premium shop for points or from the bosses as loot. You can change your outfit by using command !akatsuki or !anbu.
You can get your aura by using an aura scroll, you can get 4 types of aura: low aura normal aura super aura great aura . They are also available in the premium shop or in Lucky Hour Shop for gold. Check Commands to see how can you use earned aura.