Monthly Boss Challenge

Duration
September Weekends:
 * 5 Jan 00:00 - 6 Jan 23:59 JST (UTC +9)
 * 12 Jan 00:00 - 13 Jan 23:59 JST (UTC +9)
 * 19 Jan 00:00 - 20 Jan 23:59 JST (UTC +9)
 * 26 Jan 00:00 - 27 Jan 23:59 JST (UTC +9)

Event Rewards
Challenge Medals
 * Obtainable when the following achievements are completed:
 * Clearing the Challenge Quest for the 1st time
 * Completing (without anyone defeated) the Challenge Quest for the 1st time
 * Clearing (with at least 1 member defeated) or Completing (w/o anyone defeated) the Challenge Quest for the 2nd time or more will not grant Challenge Medals
 * The above achievements reset weekly.

Item exchange with Challenge Medals

 * For 4 Challenge Medals:
 * *5 Warrior Limit-break crystals
 * *5 Mage Limit-break crystals
 * *5 Priest Limit-break crystals
 * *5 Knight Limit-break crystals
 * *5 Alchemist Limit-break crystals


 * For 2 Challenge Medals:
 * Etowarium Shard

Exchange Duration

5 Jan 2019 00:00 - 1 Feb 2019 23:59 JST (UTC +9)

You can still exchange for items during next month's challenge.

Etowarium Shard
Combine 4 Shards to make 1 Etowarium

Previous Quests
Hide= Dec 2018 Quest=

Duration
September Weekends:
 * 1 Dec 00:00 - 2 Dec 23:59 JST (UTC +9)
 * 8 Dec 00:00 - 9 Dec 23:59 JST (UTC +9)
 * 15 Dec 00:00 - 16 Dec 23:59 JST (UTC +9)
 * 22 Dec 00:00 - 23 Dec 23:59 JST (UTC +9)
 * 29 Dec 00:00 - 30 Dec 23:59 JST (UTC +9)

Strategy
Reddit Discussion Post

Event Rewards
Challenge Medals
 * Obtainable when the following achievements are completed:
 * Clearing the Challenge Quest for the 1st time
 * Completing (without anyone defeated) the Challenge Quest for the 1st time
 * Clearing (with at least 1 member defeated) or Completing (w/o anyone defeated) the Challenge Quest for the 2nd time or more will not grant Challenge Medals
 * The above achievements reset weekly.

Item exchange with Challenge Medals

 * For 4 Challenge Medals:
 * *5 Warrior Limit-break crystals
 * *5 Mage Limit-break crystals
 * *5 Priest Limit-break crystals
 * *5 Knight Limit-break crystals
 * *5 Alchemist Limit-break crystals


 * For 2 Challenge Medals:
 * Etowarium Shard

Exchange Duration

1 Dec 2018 00:00 - 4 Jan 2019 23:59 JST (UTC +9)

You can still exchange for items during next month's challenge.

Etowarium Shard
Combine 4 Shards to make 1 Etowarium! Nov 2018 Quest=

Duration
September Weekends:
 * 3 Nov 00:00 - 4 Nov 23:59 JST (UTC +9)
 * 10 Nov 00:00 - 11 Nov 23:59 JST (UTC +9)
 * 17 Nov 00:00 - 18 Nov 23:59 JST (UTC +9)
 * 24 Nov 00:00 - 25 Nov 23:59 JST (UTC +9)

Strategy
Read pikokola's Reddit post to read pikokola, RiceKirby and JumpSlashShoot's suggestions. But DAMN this is painfully hard.

Event Rewards
Challenge Medals
 * Obtainable when the following achievements are completed:
 * Clearing the Challenge Quest for the 1st time
 * Completing (without anyone defeated) the Challenge Quest for the 1st time
 * Clearing (with at least 1 member defeated) or Completing (w/o anyone defeated) the Challenge Quest for the 2nd time or more will not grant Challenge Medals
 * The above achievements reset weekly.

Item exchange with Challenge Medals

 * For 4 Challenge Medals:
 * *5 Warrior Limit-break crystals
 * *5 Mage Limit-break crystals
 * *5 Priest Limit-break crystals
 * *5 Knight Limit-break crystals
 * *5 Alchemist Limit-break crystals


 * For 2 Challenge Medals:
 * Etowarium Shard

Exchange Duration

3 Nov 00:00 - 30 Nov 23:59 JST (UTC +9)

You can still exchange for items during next month's challenge.

Etowarium Shard
Combine 4 Shards to make 1 Etowarium! Oct 2018 Quest=

Duration
September Weekends:
 * 6 Oct 00:00 - 7 Oct 23:59 JST (UTC +9)
 * 13 Oct 00:00 - 14 Oct 23:59 JST (UTC +9)
 * 20 Oct 00:00 - 21 Oct 23:59 JST (UTC +9)
 * 27 Oct 00:00 - 28 Oct 23:59 JST (UTC +9)

Strategy
Read arakneide's Reddit post to read TheDistantBlue, derbymanches and arakneide's suggestions.

Event Rewards
Challenge Medals
 * Obtainable when the following achievements are completed:
 * Clearing the Challenge Quest for the 1st time
 * Completing (without anyone defeated) the Challenge Quest for the 1st time
 * Clearing (with at least 1 member defeated) or Completing (w/o anyone defeated) the Challenge Quest for the 2nd time or more will not grant Challenge Medals
 * The above achievements reset weekly.

Item exchange with Challenge Medals

 * For 4 Challenge Medals:
 * *5 Warrior Limit-break crystals
 * *5 Mage Limit-break crystals
 * *5 Priest Limit-break crystals
 * *5 Knight Limit-break crystals
 * *5 Alchemist Limit-break crystals


 * For 2 Challenge Medals:
 * Etowarium Shard

Exchange Duration

6 Oct 00:00 - 2 Nov 23:59 JST (UTC +9)

You can still exchange for items during next month's challenge.

Etowarium Shard
Combine 4 Shards to make 1 Etowarium! Sep 2018 Quest=

Duration
September Weekends:
 * 1 Sep 00:00 - 2 Sep 23:59 JST (UTC +9)
 * 8 Sep 00:00 - 9 Sep 23:59 JST (UTC +9)
 * 15 Sep 00:00 - 16 Sep 23:59 JST (UTC +9)
 * 22 Sep 00:00 - 23 Sep 23:59 JST (UTC +9)
 * 29 Sep 00:00 - 30 Sep 23:59 JST (UTC +9)

Event Rewards
Challenge Medals
 * Obtainable when the following achievements are completed:
 * Clearing the Challenge Quest for the 1st time
 * Completing (without anyone defeated) the Challenge Quest for the 1st time
 * Clearing (with at least 1 member defeated) or Completing (w/o anyone defeated) the Challenge Quest for the 2nd time or more will not grant Challenge Medals
 * The above achievements reset weekly.

Item exchange with Challenge Medals

 * For 4 Challenge Medals:
 * *5 Warrior Limit-break crystals
 * *5 Mage Limit-break crystals
 * *5 Priest Limit-break crystals
 * *5 Knight Limit-break crystals
 * *5 Alchemist Limit-break crystals


 * For 2 Challenge Medals:
 * Etowarium Shard

Exchange Duration

1 Sep 00:00 - 5 Oct 23:59 JST (UTC +9)

You can still exchange for items during next month's challenge.

Etowarium Shard
Combine 4 Shards to make 1 Etowarium! Aug 2018 Quest=

Strategy
Click here to read yslee9 and Arakneide's comments for suggestions and advices to beat the level.

Duration
August Weekends:
 * 4 Aug 00:00 - 5 Aug 23:59 JST (UTC +9)
 * 11 Aug 00:00 - 12 Aug 23:59 JST (UTC +9)
 * 18 Aug 00:00 - 19 Aug 23:59 JST (UTC +9)
 * 25 Aug 00:00 - 26 Aug 23:59 JST (UTC +9)

Event Rewards
Challenge Medals
 * Obtainable when the following achievements are completed:
 * Clearing the Challenge Quest for the 1st time
 * Completing (without anyone defeated) the Challenge Quest for the 1st time
 * Clearing (with at least 1 member defeated) or Completing (w/o anyone defeated) the Challenge Quest for the 2nd time or more will not grant Challenge Medals
 * The above achievements reset weekly.

Item exchange with Challenge Medals

 * For 4 Challenge Medals:
 * *5 Warrior Limit-break crystals
 * *5 Mage Limit-break crystals
 * *5 Priest Limit-break crystals
 * *5 Knight Limit-break crystals
 * *5 Alchemist Limit-break crystals


 * For 2 Challenge Medals:
 * Etowarium Shard (New!)

Exchange Duration

4 Aug 00:00 - 31 Aug 23:59 JST (UTC +9)

You can still exchange for items during next month's challenge.

Etowarium Shard
Combine 4 Shards to make 1 Etowarium! July 2018 Quest=

Strategy

 * Use Kirara's Staff and use the crit skill.
 * Stun the Water Pig with an.
 * Stun/kill the Sun Knight with a
 * Beat up the dragon with your  and