Gameplay:A Dream of Empty Skies BBDW Event

Event Details
Entering a Phantom Field to strengthen Rei's powers of Observation, they encounter a mysterious girl with horns and a tail called Mai. Unlike the last time they met, this Mai doesn't bear any animosity towards them. While trying to return to Fugaku, they continue through the Phantom Field. During their journey, they discover her conviction and obsession.

Challenge event quests!
Quests will drop s upon clearing them! Clearing all the quests will gives rewards that can only be obtained during this event!

Gather Crystallized Mana!
Obtain rewards according to the amount of crystallized mana collected! Available rewards can be seen at a glance from the event's top page, by clicking the Point Rewards button!

Special Title Reward
"'You seem pretty interesting. So please, don't die on me too easily. If you can manage to survive, this crimson spear will be the one gut you...heh heh heh.' -Another Dark Mai"

The special title バァリアブルハート ("Variable Heart") will be awarded after the 6/3/2021 maintenance to those who managed to surpass 300,000 event points (No-Name Excerpts) by 6/3/2021 12:59 JST.

Event Bonus
Special characters and grimoires provide a drop rate bonus for No-Name Excerpts:

When equipped on Makoto Nanaya, Tonfa provides the following additional bonus effects:
 * Damage Reduction 30% (Max Awakening, 35%)
 * Damage Inflicted Increased 20% (Max Awakening, 25%)

When equipped on Akane Teruhiko, Student Council provides the following additional bonus effects:
 * Damage Reduction 45% (Max Awakening, 50%)
 * Damage Inflicted Increased 60% (Max Awakening, 65%)

Furthermore, Another Dark Mai's stats (Atk, Def, Hp) are doubled during this event.

Login Bonus
Duration: 2021 24:00 - 2021 23:59

Pre-release Campaign
Duration: 2021 13:30 JST - 2021 JST

Special A1 character quests are available during this period until June 3rd's scheduled maintenance. Hazama, Fuzzy, Raquel, Makoto and Akane character fragments have increased drop rate from daily character quests, and these quests cost half AL.

See also below.

Last Spurt Campaign
Duration: June 2, 2021 maintenance - June 10, 2021 12:59 JST

Campaign details:
 * 1) 1.5x boost to  received upon quest clear
 * 2) Addition of a special high-difficulty event quest featuring Mai and Another Dark Mai.