AU Rottmnt x Steven Universe Era 1 and 2

Era 1: Thousands of years ago, the Diamonds (Krang Prime, Draxum, and Karai) sent Big Mama (Rose Quartz) to colonize Earth, but she became fascinated by the planet and decided to protect it. To defend Earth, Big Mama created the Crystal Gems along with Leonardo (Amethyst), Raphael (Bismuth), Big Mama's assistant (Pearl), and Sunita and Cassandra (Garnet). The Crystal Gems fought against Homeworld for thousands of years. During the war, Raphael (Bismuth) created a dangerous weapon, but Big Mama refused to use it and had to imprison him to prevent him from causing more harm. At the end of the war, the Diamonds launched an attack that corrupted almost all of Earth's gems. The surviving Crystal Gems promised to protect the planet and keep its secrets hidden. Thus ended Era 1. Era 2 After the war, Big Mama (Rose Quartz) tried to live peacefully with the Crystal Gems. One day she met Splinter (Greg) and little by little they fell in love. Pearl (Big Mama's assistant) suffered seeing Big Mama forming a bond with someone else, since for thousands of years she had been her closest companion. Although she felt jealousy and sadness, she eventually accepted that Splinter made Big Mama happy. In time, Big Mama decided to create a new life with Splinter. To do so, she had to give up her physical form and surrender her gem. Thus Steven (Michelangelo), a half-human, half-Gem boy, was born. Splinter, Pearl, Leonardo (Amethyst) and Garnet (Sunite + Cassandra) took care of him while he discovered his powers and his place in the world alongside his friend Connie