This challenge and the characters I write about do not belong to me, the challenge belongs to Wishing-Fire, and the Kingdom Hearts characters belong to Square Enix and Disney.
Author's Note: Although Riku's been a jerk in the past, his actions had to have come from some type of desire.
1. Sora or Riku - Hero.
Ever since the sterling haired teen could remember, he had dreams of being a hero. Escaping the islands, and protecting Kairi seemed to have mushroomed from that simple desire. When the man with the dark blue eyes let him hold that weapon, shaped like a key, Riku could practically see the waves falling away, the roads to new worlds opening to him. When Riku's mind was concerned purely with the pursuit of being a hero, nothing else mattered. Looking back, Riku could easily trace the reckless acts he had done, hurting Sora, falling into darkness, letting Ansem possess him in exchange for more power to that selfish desire.
Now, as he walked the Road To Dawn, the King at his side, Riku had a new goal; protecting the people he cared so much for. No matter what happened next, Riku would do anything to make sure Sora and Kairi stayed safe. When DiZ asked him, to retrieve the Organization member named Roxas, Riku didn't hesitate, only picked up Soul Eater, and departed for The World That Never Was, ready for anything. Through the Heartless and the cold rain, and the battle with the skilled Nobody swordsman, Riku fought with swift and singular purpose. When he finally let Ansem overwhelm his heart, unleashing his suppressed darkness, all Riku could think about was how his actions would help his friend.