After the world was brought down by the disaster known to us as World War 3, a new energy was discovered after the fallout, and it was named Shinen. It is a mysterious force that is believed to be linked to radiation but grants supernatural powers to those who can properly wield its strength, either to madness or to greatness.

Later on, as the world forced itself back together, a young soul by the name of Sumato Otokin set his sail to achieve his dream of being the protector of many to atone for his past sin and guilt.

But the path he chooses is one of mystery, danger, and truth that is better left unsaid. The more he struggles for answers, the more he comes back asking for more with secrets tied to his grandfather and the long-buried force lurking beneath Kaida Academy. Sumato’s journey from dusk to reach dawn will be one to remember.