You can be friends with users on the same server.
※You can not be friends with users from another server.
■ Friend search method
You can search for a specific user by entering a user name or account ID on the "Search" tab in the friend screen.
Moreover, recommended friends are displayed in the search screen so you can apply at once.
When you become a friend, you can send Stamina x1 per day.
Additionally, you can receive up to 60 Stamina per day.