Mobile Suit Zeta Gundam, Mobile Suit Gundam SEED Destiny Recommendations
I'm surprised no one has made this recommendation yet. Like how SEED did with the original Gundam, SEED Destiny takes many things from Zeta Gundam, from a hot headed MC to a golden mobile suit with chinese letters written on it. Shinn Asuka is basically Kamille Bidan minus the character development. If you want to see a childish little boy actually develop into a well rounded young man, give Zeta Gundam a watch and see how it compares to SEED Destiny.