"Kion's Lament" is a song from The Lion Guard: Return of the Roar, sung by Kion himself. For the first half, he voices his doubts as his destiny as the leader of the Lion Guard, while in the second half he resolves to do so. It serves as the musical equivlant of the first film's scene when Simba doubts his destiny as the future king.
[Speech] Kion: Dad wanted the best for the Lion Guard, and I found them. But now...maybe the best isn't good enough. I just don't understand.
Why? Why even trust me at all?
They say the Guard is my call
But then come tell me I'm wrong
Now what? What should I do?
And who? Who do I turn to?
Now everything feels so upside down
Deep down, maybe I knew
It was way too good to be true
With all my friends looking up to me
Some leader I turn out to be!
[Speech] Mufasa: Kion! Kion: Hevi kabisa! Are you... Mufasa: Yes, Kion. I am your grandfather. Kion: ...Mufasa. I've heard a lot about you. Mufasa: And I've been watching you. You are about to embark on a great journey, Kion: leader of the Lion Guard. Kion: I'm not sure Dad's gonna let me lead the Lion Guard. He's worried that I can't handle it. Mufasa: Kion, Simba is worried, but he's worried because he loves you. Being leader of the Lion Guard will not always be easy. Kion: Then...maybe Dad's right. Maybe I'm not ready to lead, or use the Roar. I'm not even sure I can control it. First it's super loud, then it's just a squeak. And I...I don't want to end up like Scar. Mufasa: Don't be afraid, Kion. Trust your instincts, the Roar will be there for you when you need it. And so will I. Until the Pride Lands' end. Kion: Grandfather Mufasa, don't go yet!...Trust my instincts, the Roar will be there when I need it.
Maybe my journey is far from done
They need a leader, and I'm the one
So now it's time for them all to see
The lion I was born to be!
It is time
To take the lead on my own
It is time
For something bigger than I've ever known
No need to wonder, the choice is done
Now I believe I truly am the one