I Was Summoned As An SSS-Ranked Dragon God

If not winning the lottery because you were off by one number wasn't bad enough, crossing the street and getting hit by a truck put the cherry on the cake. It wasn't all bad, waking up as one of the most powerful races in the universe could be called a bonus. Maybe luck was finally smiling upon him, or so he thought until he was summoned by a failing student. This mighty dragon subservient to a human? He didn't think so, instead of granting his summoner cheers and applause for summoning his mighty self, their classmate's jeers and laughter rang throughout the classroom, "After all of that you summoned a tiny silver Lizard" They laughed and mocked her. How could this mighty dragon allow his summon to be mocked and jeered? Little did they know this little lizard was an SSS-Ranked Dragon god. ____________ The story lies in two worlds, the world where the Dragon lives, and the otherworld where humans use summons.