Arata Masamune, a decorated special forces commander, returns from a successful mission that cost his entire team. Haunted by his past, he's given a new assignment: teaching at Shōgun Academy, an elite school for the children of New Tokyo's most powerful officials.

For Arata, the classroom is a new kind of battlefield. He must confront arrogant students who manipulate power and privilege, including the sly daughter of a politician, a brilliant hacker, and the son of the National Police chief. With his harsh, no-compromise methods, he’s determined to whip them into shape.

Can a traumatized veteran survive this new hell, or will he finally break under the pressure of a class that’s more dangerous than any war he’s ever fought?