Firm Friendship Ring

Firm Friendship Ring (Korean: 견고한 우정 반지, gyeongohan ujeong banji, "Sturdy Friendship Ring") is a POWER+ Epic Treasure released alongside Squid Ink Cookie during the Black Sugar Pirate Ship update. It had the ability to grant the player a certain amount of Crystals and Coins upon log-in, alongside giving two players running in Friendly Run an extra Coin per Gold Pirate Coin collected.

Story
''This ring was created to commemorate someone's friendship. Do you think the friends still remember about the ring...?''

Trivia

 * Alongside True Friendship Pendant, this was the first POWER+ Treasure (or indeed, POWER+ anything) to be added into Cookie Run: OvenBreak.
 * This remains the only instance where a POWER+ element was ever introduced.
 * Alongside True Friendship Pendant, this was the first Treasure to be given an expiry date.
 * This Treasure appears in a cutscene for the The Treasure and the Crow story.