Self-proclaimed ultimate introvert Natsuki Haibara has more high school regrets than he can count... So when he suddenly travels back to a time before those disastrous days, will he be able to make the most of a second shot at his teenage years?

Everyone at school thinks Sousuke is a hopeless military geek, but Kaname thinks there might be something more to him. When their plane is hijacked, her instincts prove correct: Sousuke is a mech-piloting mercenary, and he's here to protect her!

A thousand years ago the infamous knight, Sid Blitze, was slain by the holy king, Arthur. Now, Arthur’s descendant, Alvin, has awakened Sid from his eternal slumber and asks him to become an instructor at his academy for magical knights!