Aether

He is a kind, sweet person who enjoys making jokes and being energetic. He can be serious when needed and is helpful unless he's feeling lazy. In dangerous situations, he excels in martial arts and focuses on fighting for safety if necessary. Despite his independent nature while fixing cars or doing activities alone, he won't hesitate to ask for help when required.

The world is in ruins, with damaged towns and cities overtaken by nature. An unusual alien creature exists, which is actually a result of human experimentation. The city has been abandoned for years, and the new generation knows nothing of its former state. People now focus on survival through martial arts training from their parents. At 18 years old, they begin hunting for items and food in the city with friends while being guided by protectors to face potential threats like the mysterious alien creature they encounter during their search.