Arthur Grey a boy who was reincarnated into a totally new world after being assisted on previous life where he was one of the top swordsman and mage. He was reincarnated into the body of a country side boy who's parents were both well known mages themselves. As young as 4 Arthur awaked his core. And since then his father had taken great pride in training him until he realized that his son needed an actual tutor seeing his power was so great for such a young child. So. Arthur and his parents set out with one of the old guilds in the country side to the main city of Sapin. A floating city where the best mages are trained and where the royal family stays. But on their journey their carriage was attacked by bandits and in order to save his mother he pushed his mother to safety and fell down the cliff.
After a day he awaked. He was shocked as to why he wasn't that injured and wondered what broke his fall. Thats when he heard a voice in his head that lead him into a tunnel. Thats where he met Slyvia who broke his fall. Sylvia was a scary looking being who looked after Arthur for a for weeks and promised him a way to get back to his parents. They grew close and Arthur seemed comfort seeing her almost as a mother. But nothing lasts. Sylvia gave him her Beast will and left him with a weird looking stone.
Days after he was set free he found himself alone in the forest. Thats when he heard human voice. He followed those voices and saw that they were slave traders who had a young girl around his age in captured. He was enraged and made it his mission to save her. Once he killed all those traders the girl, Tessia, followed him around when he promised to take her back home. They grew closer during their time in the forest. During the time they spent together being around a month and longer the weird stone which turned out to be an egg which bonded with Arthur becoming his bond. The pet dragon named now Slyvie after her late mother called Arthur 'papa' and saw Tessia as her 'mama'. After weeks Tessia finally recognized her surroundings. After a bittersweet leave since he was in a hurry he never saw the girl again.
Timeskip
It's been 9 years since then. Arthur was 16 years old. Trained and mastered many. He was a quad-elemetal and beast tamer but hid his true powers. Arthur and Slyvie who was disguised as a cat always rested on his shoulder as they communicated telepathically. He had connections with famous people. He had gotten into the most prestigious school for magic under direct guidance of the headmaster who had taken a liking to him. At the opening ceremony for all new students. The headmaster had announced the student council. And that's when he saw her again after years. Not only that but he never expected to hear "now please welcome the student council president. Princess Tessia of the kingdom of Elenoir" hold on. She was... she was a princess?!