Bye Bye, Earth Season 2

Belle Lablac doesn’t really fit in as the only human being in a world full of anthropomorphic animals. No fangs, no fur, no scales, no claws. Lonely and eager to discover where she comes from, Belle journeys to find answers to the questions of her heart. Carrying nothing but her giant sword, the Runding, she faces a world of possibilities and pitfalls in hopes of discovering the truth.

Seeking for revenge, Count Saazbaum, a Martian, attacked the Earth. Later on, the war between the Terrans and Martians ended with Earth's Terrans gaining the victory. However, nineteen months later, the battle between them continues. Martians still continues to invade the Earth and the Terrans to protect it.

We have 2 brothers riding around in their Hover bikes. Suddenly some giant Metal Fortess gets in their way. After a brief battle, the duo manages to mortaly wound the fortress. It retreats and dumps our heroic pair in a seemingly wasteland. But the wasteland is inhabited by nomads that indicate that the fortress has hidden inside a mountain. The Nomads plead for the duo to finish the job. Two of the natives go with them as guides, and somewhere along the way the gain the help of a faery that can transform into a mech-warrior woman.

A young boy, yearning to take to the skies and reach the Island of the Astrals, suddenly found both his life and his fate linked to a mysterious, blue-haired girl. They set off on a skyward journey, meeting trusted friends, crewmates, and the massive airship to be their wings along the way. While evading the clutches of the empire and facing off against fearsome primal beasts, the duo felt their bond deepening—their lives changing. But despite these tribulations, they're still a long way away from their elusive destination. The boy and girl, accompanied by fellow seekers of adventure, depart once more into the vast blue skies.