On her eighteenth birthday, Yukinoshita Rin learned that her family's ancestral sword technique had been meant for someone else all along.
She took her sword and fought her way from her hometown to Tokyo, where she found a boy named Yaoyorozu Yuma.
“I'm your retainer.”
“Huh?”
Yuma's parents were both dead, and his biggest problem was losing at video games. He thought he'd found someone to practice with. Instead, he got a bodyguard carrying a sword.
The shadows of the gods roamed the mortal world, and sword guards shaped like family crests gleamed in the light.
It turned out this world was a lot more dangerous than the arcade.