A mecha otaku is reincarnated into another world as Ernesti Echevarria, also known as Eru. In this world, huge humanoid weapons known as Silhouette Knights exist. Dreaming of piloting those robots, Eru and his friends, Archid Olter and Adeltrud Olter, aim to become Knight Runners.

• Rie Takahashi
• Shinsuke Sugawara
• Ayaka Ohashi
• Atsushi Imaruoka
• Hidetaka Tenjin
• Kazuyuki Okitsu
• Masaru Ikeda
• Natsumi Fujiwara