In the year 2099, mankind has colonized parts of the Solar System thanks to the evolution of space travel. To venture further beyond what man has accomplished, the space vessel Starlight is launched. After rescuing a mysterious girl from a wreckage near the asteroid fields, the crew of the Starlight plot a perilous journey towards the Canopus system in search of the planet known only as "Odin" - the possible key to all forms of life.

Habahiro Hige awakens at his desk at work, but much to his surprise, he has become a baby! To make things stranger, Iori Wakabayashi walks in wearing a school uniform but doesn't recognize him as the baby. Upon being picked up and held by her, Hige discovers that he doesn't just have the body of a baby but the mind of one as well.

On the vast continent, heroes break through obstacles and chase their dreams. What are heroes like? They go beyond themselves and try to be perfect; They carry burdens forward and understand the true meaning of love; They advocate power and never give up. We write biographies of heroes and start a new chapter of love and courage.

In the Binfield Kingdom Chronicle, it is said that there was once a small, peaceful country called the Kingdom of Winfield, whose king and royal family possessed great white wings. Hamura Shou is newly enrolled at Yuusei Academy. After hearing about a student named Misonou Kai from the headmaster, Shou comes to believe that Kai is his younger twin brother, who he was separated from when he was younger. However, after a mysterious earthquake, Shou is suddenly carried into another world with two other students. It is in this new world that, after being attacked by a monster, Shou suddenly unleashes great, white wings.