Plot of Beach NPC

The Patch of Shore NPC is a young NPC woman that leads Greed Island Players that meet the preexisting requirements, on a quest to acquire the Patch of Shore card.

Greed Island arc
When Kazsule's Alliance arrives in Soufrabi and ask around town for information on the Patch of Shore Card, Kazsule finds the Patch of Shore NPC, who divulges it's a place where valuable treasures lie. She also details that Pirates that took over the town 15 years ago lead by Razor and his 14 Devils killed all of the fishermen who knew about the location of the Patch of Shore, including her father and brother, but she knows of the location of the card thanks to her brother. After talking it over with the other alliance members Kazsule asks the woman for the location of the Pirate's Base.

As soon as Gon's team beats the Razor pirates, the Patch of Shore NPC leads them to the top of the lighthouse and under one of the windows, presses a hidden switch that shines a beacon light on the location of the Patch of Shore. She also reveals that there isn't any valuable treasures in the Patch of Shore as it's just an exaggerated myth and she wanted to tell Razor and his pirates, but she thought they'd never believed her. Gon inquires if no one ever told the Pirates the location of the Patch of Shore, which the Patch of Shore NPC responds that it's a sacred place to them and would never reveal it's location, even if it cost them there lives. Hearing this saddens Gon, but Killua reminds him it's just a game. The Patch of Shore NPC gazes out onto the ocean as the sun rises and says that she can finally again enjoy the view from the Lighthouse and admits her treasure is the ocean itself.