It is also the npc that exchanges the new ocean currency for items and has an item store that can only be purchased for this new currency.
basically it's the only npc I've found that works with this new ocean age coin so far.
if I have time, I will go there again and take prints from the store, but everything will be in portuguese from Brazil.
The one on your screenshot is named Levinia in your version of the game, while this NPC is named Lavinia. This could be a bit confusing.
Levinia has it's own page and correct location shown here.