About Spellbook Sweep

■Spellbook Sweep
Spellbook Sweep is a puzzle mini-game where you search for hidden objects​
by clearing tiles on each Floor of the library​
to find the 1 Key Tile and 1 Door Tile hidden among 35 tiles.​
Once you find both the Key and Door Tiles,​
you can obtain Floor Rewards and advance to the next Floor.

■Bonus Floors
Bonus Floors appear after every 5 Floors.
On Bonus Floors, you can set the Bonus Floor Rewards to the rewards of your choice,
allowing you to obtain greater rewards than on Normal Floors.
The rewards you can select will correspond to your progress in the Main Quest.
For details on the available rewards, please check the Floor Information
in the top-right corner of the event page.

■Cleaning Items
Each tile can be cleared by using Cleaning Items.
The number of tiles that can be cleared at once varies depending on the type of Cleaning Item used.
During the event period, Cleaning Items can be obtained from Daily Mission Chests,
Helper Dispatch, Spellbook Sweep Missions, Floor Rewards, and more.
Cleaning Items can only be used for the iteration
of the Spellbook Sweep event in which they were obtained.
After the event ends, any unused Cleaning Items will
be automatically converted into Arbored Bookmarks.

■Arbored Bookmarks
Arbored Bookmarks can be obtained by clearing Normal Tiles on each Floor.
They can be used to purchase various items in the Limited-Time Event Shop.
Arbored Bookmarks can only be used in the Event Shop
during the event period in which they were obtained.