Items can be obtained not only through hunting but also through bosses or content (party quests, random portals)
When you clear a boss or content, you are automatically entered into a draw and can obtain rewards through a lottery within the predetermined reward pool
Since all worlds use a single market and character movement between worlds is easy, the obtainable quantity and drop rate for each item varies in proportion to the number of active users in each world
You can check your entries, drop rates for each item, and winning probability for the raffles you've entered in the raffle entry window
Raffle results announcement