Or Kai for short. Kainamoto is Sora's Older brother. He wields a sword with a green handle & a purple mark similar to the symbol on Sora's necklace. He also has a scar similar to Tidus when he was 13. It is still unknown how he got the scar. Sora has been looking for him since the start of KH3. His elemental power is Thunder. He has been feeling guilty for so long snce Sora has been looking for him,even though he ran away because he felt repaced, & everybody liked Sora better than him.