NPCs are the settlers of in Coral Island and Starlet Town. Each NPC has their own unique routine all over the town and sometimes other parts of the island. Each NPC has their own like and dislike, and sometimes they provide quests for players. Some quests are necessary to unlock secret quests and history of the NPC.
Non-dateable NPCs are other NPCs players who can befriend but cannot marry. Some NPCs have hidden stories that can be unlocked through quests and a certain level of friendship