Destiny's Embrace

Kairi's Keyblade was given to her by Riku in The World That Never Was in Kingdom Hearts II. Kairi's Keyblade is delicate looking, and sports a flower design. Kairi used this Keyblade to fight against the Heartless for one battle in The World That Never Was. Where it came from, how Riku got it and how Kairi is able to wield it are all unknown. It's keychain is a Paopu fruit, similar to her charm on Oathkeeper. The Paopu is used several times to indicate the bond between her and Sora.

However after this moment Kairi's Keyblade is never seen again. It is unknown if it will reappear in any future installments of the series.

It was once speculated that Kairi's Keyblade was called "True Heart" or "True to Heart". However, the name has also been speculated to be "Radiant Sunset", another possible name is "Radiant Destiny", symbolizing the names of her original home Radiant Garden and Destiny Islands. Many have also named it the "Flowering Strength". This seems to be it's more popular name in fandoms. Whether any of these names are its true name is yet to be seen. Because of its tropical appearance, the Paopu fruit keychain, and what appears to be a blue wave design on the guard this keyblade may be the keyblade of Destiny Islands, but this has yet to be confirmed. The Paopu fruit may also represent Riku's feelings for Kairi.