Yep, apparently I have a lot of songs for this couple :)
History:
Nuka always had a crush on Kiara, and even growing up under Zira's hate for Simba's family he never forgot about her. On the day Vitani and Nuka should light fire on the savannah, Nuka was unsure, he didn't wanted to be a villain to Kiara or hurt her, he wanted to be her hero, to protect her. But he decided to ignore his feelings (as always) and do what Zira said.
But, when he sees Kiara escaping in agony from the flames, he can't stand seeing the girl he loves suffering, Nuka ignores everything Zira said and their plans, he runs to save her from the flames. In the end, instead of Kovu, Nuka is the one who will save her.
Images used and characters (C) Disney
Lyrics (C) Bring me the Horizon