Loyalty Points
From Revival Ragnarok Online
Loyalty Points, or LP, are a reward for completing missions. You can spend them in the Loyalty Point shop in the city for which you obtained them.
Loyalty Point Shops
Any city with missions will have an LPS. The LPS will allow you to exchange LP and Zeny for items. All items from the LPS will be consumable, pet eggs, or durability-based equipment.