Dual Blade Training guide

Lvl 1-20 all the beginners quest and Required quest.
Lvl 21-24 Kerning Pq
Lvl 25-30 Subway Pq
Lvl 31-38 Monster Carnival, Max Trojan and Spd
Lvl 39-50 Monster Carnival, Max Rombot and Spd
Lvl 51-70 Monster Carnival 2, Pyramid Pq or Ghost Ship Pq (lvl 60)
Lvl 71-75 Windraiders (Lower Ascent)
Lvl 76-80 Stormbreaker (Stormhall)
Lvl 81-100 Gallopera