Below you’ll find the list of all master level J-Ster Opponents in Astria Ascending and where they can be found. Please note that J-Ster is not unlocked until chapter II. This guide is a work in progress and will be updated as we progress through the game.
Uptown
Ophern
Location: Outside
Rules: Hidden, Lock
Trade Rules: Flip
Senna
Location: Outside
Rules: Open
Trade Rules: One
Residential Area
Belza
Location: Residential Area
Rules: Open
Trade Rules: One
Awisi Woods
Shery
Location: Area 2
Rules: Hidden, Random
Trade Rules: One
Peyska Spring
Rumeh
Location: Area 1
Rules: Open
Trade Rules: One
Windam
Quianna
Location: Outside
Rules: Hidden, Lock, Random
Trade Rules: All
Wanja
Location: Item Shop
Rules: Open, Lock
Trade Rules: All
Amahle
Location: Outside
Rules: Hidden, Random
Trade Rules: One
Xinavane
Location: Guild
Rules: Hidden, Random
Trade Rules: One