Thread:Cpt.Nojaw/@comment-25893863-20151001111527/@comment-26896603-20151007040706

Once you complete the event map - finishing Area 5-4 - you can go to Area 1-1 and complete it repeatedly (defeat the Area boss). Afterward, if a bonus area appears, Oracle will tell you that you found one and the screen will have one of the dots pulsing red.

Just enter it, every bonus area can have 0~4 LAWs, no one reported having 5 yet.