Box Event

A box event is a special kind of event where there are a static set of rewards available in a series of boxes you can summon from, typically obtained from fighting bosses you access using tickets you acquire from quests.

Quests
There are usually a series of normal and hard mode quests, as well as sometimes extra difficulty. All difficulties drop boss battle tickets, with a higher quantity drop typically for the harder mode quests. There are also typically rewards for reaching certain breakpoints of missions cleared between all the quests in the section. The hard versions of quests are typically limited to 3 clears a day and also usually have a small chance to drop specific unit shards. The extra versions of quests are typically limited to 1 clear a day and can drop elemental shards.

Boss Battles
There are separate bosses for each difficulty (normal, hard and extra) with significantly higher stats for the higher difficulties. Once you clear a section (normal, hard or extra) the associated boss unlocks. Each attempt at the boss requires boss challenge tickets (the cost to fight the higher difficulty versions is higher). Boss health is maintained between attempts similar to raid bosses for normal and hard difficulty. For extra difficulty, if you fail to clear the boss in one attempt, you must start over and your tickets are not refunded- additionally the boss gains additional stats each time you do the extra difficulty.

When you successfully kill a boss, you receive event coins (the quantity given is higher for the higher difficulty bosses). Killing an extra difficulty boss also gives additional rewards which vary based on the level of the boss (typically level 10 and level 20 will reward Sinful Bubble, other level bonus rewards are less valuable).

Because of the difference in price and reward between the normal and hard boss, which version is more efficient to fight will depend on how many attempts it takes you to kill the boss. Typically even a very weak team can clear the normal boss in 1 attempt, but the hard boss is substantially stronger. The extra boss is much more difficult and should only be attempted with a very strong team, since a failure to clear it will result in wasted tickets.

Notes:


 * Boss Challenge Tickets will be counted as used even if one quits during a boss battle.
 * If you're defeated, the next battle will carry over the enemies' remaining HP (except on extra difficulty).
 * Mercenaries can't be used
 * Defeated bosses can be replayed (on extra difficulty they become more difficult each time and give bonus rewards based on the level of the boss)

Event Summons
You use your event coins to summon rewards. There is a series of reward boxes (typically 5) with a static quantity of rewards in each box. You can view the lineup of the current box you are on (including a count of what is left in the box) or for all the lineups. For all boxes except the last one, there is a "Featured Reward" which you must receive from the summon before you can choose to progress to the next box (using the "Reset" option). For the last box you can't reset until you have gotten every item in the box, at which point the reset will refill the box with the same contents.

Note: Do not move to the next box until you have received everything you value from the current box as you can't return to a box you have already reset. Reruns of the event will remember your box progress and will not allow you to go backwards.

Rewards from event summons are delivered directly to inventory.