One thousand years after the Giant Warriors caused an apocalyptic event known as the seven days of fire, humans are living in constant fear of the Toxic Jungle. This ever-spreading forest is filled with poisonous plants and gigantic monstrous insects; even the very air is deadly. Nausicaa is the kind and wise princess of a small, peaceful country known as the Valley of the Wind, which has so far avoided the spread of the forest. One night a large airship containing one of the Giant Warriors crashes into the valley. The following day soldiers from the powerful nation of Tolmekia invade the Valley of the Wind to reclaim and revive the warrior. As the only one who truly believes that there is a way for humans to live alongside the insects, Nausicaa must find a way to stop the war that now threatens her people and protect the Toxic Jungle before the Tolmekians burn it to the ground.
In the distant future, Earth's oceans have dried up, leaving a vast sandy desert in their place. On this inhospitable planet lives Sam, a boy whose older brother went missing years ago while chasing the sand whale, a behemoth that lurks beneath the sand. Now, Sam has teamed up with the local gang of sand pirates, and has dedicated his life to hunting the whale down himself. But when the boy accidentally rescues a mysterious girl from a fleet of military ships, little did he know that she'd be connected to his long lost brother...
Both are set in post-apocalyptic worlds affected by severe ecological changes which have transformed the earth - so there is a strong enviromental theme to both.
They both feature an industrialised civilisation trying to obtain a particular person/thing which may have repurcussions for humanity's (and the earths) future.
The main protagonists for both are initially independent bystanders who are swept up in these events.
Born into the wealthy family of a famous musician, Shu Amamiya feels it is his fate to become a professional pianist. But when he transfers to a new elementary school, his goal is threatened by an obnoxious classmate, Ichinose Kai, who has the ability to produce beautiful sound from a piano that was thought to be broken. The two quickly become friends; however, their friendship is tested when they face off in a competition to determine who has the better skill, greatest ambition, and the strongest love for the piano.
Beyond the fact that the main characters of both Piano no Mori and Nausicaa look remarkably similar, the feel of both of these movies is very similar. Both are more about human emotion than what is actually going on in the story, and both have great music.
Many years ago, sea plane pilot Marco Paggot was placed under a curse which transformed his face into that of a pig. Now, he lives a solitary life as the renowned Porco Rosso and rules the skies of the Adriatic protecting civilians from sea plane pirates. One day however, Marco meets an ace American fighter pilot, Donald Curtis, and the pair immediately clash leaving his plane a wreck. But when Curtis discovers that Marco survived his previous attack, he’s determined to have his victory and makes the gruff pilot an offer he can’t refuse…
Ryo has always enjoyed baseball, and has an incredibly fast pitch to prove it. She is better than any man she knows, yet has never really put her skills to the test; after all, baseball is a “man’s game”... until now! Keiko Himura, the chairman of Kisuragi High, has a goal: to create a team that proves women can play just as well as men -- if not better -- and she has chosen Ryo to be the new team's captain! With 8 more teammates to find, can the girls lead the team to the ultimate victory, to win at the famous stadium Koshien?
Both Nausicaa and Ryo are girls that are put in positions traditionally reserved for men. Both are self-confident, strong, loveable young women who sometimes doubt themselves, but come through for the people that depend on them in the end.
Yohko is nothing but ordinary. Throughout her life she has been considered an outcast, especially with a hair color not native to many in Japan, bright red. Things change for Yohko when a mysterious man named Keiki arrives and claims that she is his empress. Yohko and two friends are then taken through a vortex, and then abandoned.. in a world of demons and magic.
In both 12 Kingdoms and Nausica the main female character is in a position of royalty and power and looks only to protect and save her people. Also, both shows take place in fantasy worlds where there are unusual creatures and creative atmospheres. I think if you liked one you would definitely like the other.