Sun and Moon were brought to life in a laboratory. All they have ever known was the facility and they've rarely got outside. As yours past the scientist started to treat them horribly... And sun and moon will often have scars. I got to a point where moon was super defensive of Sun but he still tried his best to respect the scientists so they wouldn't take Sun away from him. And some of the often sick lately but he's still trying his best to be nice so they wouldn't hurt him or Moon...