All of Moonlight's life, he wanted to fit in with the other cats of TreeClan. Most of the TreeClan cats were yellow. Moonlight was black. He shone brightly in the dark. That was how he got his Warrior name. In TreeClan, most cats were good at climbing. They lived next to a large mountain range. Moonlight liked to prowl on the ground. He was very distant from other cats. No one was his friend. No one even liked him. When Moonlight passed, His strong desire to fit in became half of his soul. Who he wanted to be. All his life of sorrow ended in sorrow when no one cared about him or remembered him.
The cats of TreeClan are Himalayan cats. They live in the Himalayan mountain range which is home to the tallest mountain on land, Mount Everest. Thanks to @shinytoothless for the CC and lineart