You can get Clothing from Quest rewards , open world bosses , Dungeons (bosses , mystery boxes) and lastry from collecting items for a collectable rewards or buy them from the many NPC shops.
It can be anything that you can drink or eat inside or outside of battle.
There are many tipes of collectibles clothes usable item relics and many more , the only thing you need to do is gather the requested items and go exchange them for the requested item .
A Deco is a "skin"* in that it provies no stats, takes up its own equip slot, and provides a full character skin.
- skin- An item that control how yoru character looks to others.