You can obtain Enhancers (materials for Unit/Equipment Enhancement) and Zeni from the Daily Event Quests. There are limitations on how many times a stage can be played in these quests.
In addition, when you complete all your Daily Missions, you will receive bonus Key(s) to unlock "special versions" of the Daily Event Quests during promotion period. Upon unlocking, you have unlimited access to the stages for a fixed amount of time.
- You can get Unit Enhancers that increase EXP
- You can get items that sell for Zeni
- You can get Equipment Enhancers