Use the Friend System to befriend other Admirals and perform Energy Exchange with them.

You can add or remove a Friend by clicking on other Admirals' characters in the city, or by searching in the Friend menu.

You can give or receive Energy through Energy Exchange with a Friend, and you can have up to 50 friends.

You can receive up to 50 Energy per day, and you can give 1 Energy to a friend per day.

If you have unclaimed Energy from a Friend, a badge(Red dot) will be displayed in the Friend List.

If you click the Ranking button in the bottom, the Friendship Rank will be displayed. It is a list that ranks your friends based on the total Energy received from them.

If you remove a friend, the player will be deleted from the ranking. Even if you add the player as your friend again, the accumulated Energy you received will reset.