Hikaru Amatsuga

"A normal middle school kid who lives in Kita-Kagami City where this story takes place. One day, he coincidentally finds and awakens the Mecha-Ude Alma who was trapped in a cube and their bizarre living situation begins. Because of this meeting, he gets dragged into the battle between the two organizations fighting over the Mecha-Udes." ― Hikaru's bio from official site