You did Sikara Village Quest first

Create a party
Talk to 2 Guardians beside arus to get 2 Entrance Crystal (purple and yellow)
Talk to Arus
Wear the Cape of Balie's Organization
Enter Sage tower warp


Sage Tower Gate
You can Hunting after enter this gate
Warning:
Monsters in this dungeon very agressive and strong
U need High vit and high defend and high damage if wanna hunting in here

If u disconnected, you will back to Sage tower warp on sikara


Entrance