The Sub Quests are obtained from events and other additional quests.
■ Sub Quest
① You can check the list of Sub Quests currently in progress.
② You can check the details of the sub quest.
③ You can abandon the quest and no longer track it on the main screen.
④ You can track the quest automatically when you tap on 'Auto Quest'.
※ The guide was produced in a separate test environment.
So, It may change depending on the update and development situation.
Thank you for your love and interest in the Devil Book~
Devil Book Team