BIO

For born, Mirai never knew who was the saver of earth, for what his grandma and grandpa told him, he was a amazing person, he saved the world from kaijus, when turning 18 Mirai was out running errands for his grandma, when suddenly a kid was running on the road where a incoming car was about to hit the baby so without a second thought Kenji pushed the kid out the way, Killing Mirai in the process, when this happened Mother of Ultra and Ultraman Dyna watched this happen, so as a last resort, The Ultra Brothers, Mother and Father of ultra and Ultraman Dyna decided to revive Mirai Koyanagi as Ultraman Nitro!