>>632269My Japanese isn't the best, N4, but I do like Hinotori better because of the overall message, but I like both songs.
Heart Challenger is a very clear song. It's a girl (Kiara) confessing to her love (Calli). If you're unfamiliar with the characters it can be a sweet love song.
Hinotori is a lot more wide. It's overcoming all odds. I will keep on fighting til the dawn.
Even if you lose your way, determination will see you through.
The only thing is it's not pure English speaker friendly, you have to go to a fan song here for that.
https://www.youtube.com/watch?v=rDNTbMLWYIU 