A guidebook containing interviews, illustrations, and extras that had not been compiled in volume form.

1-2. Tokumori!! Hagane 4-koma Dairensei 3. Hagane no Renkinjutsushi Gaiden: Simple na Hitobito 4. Hagane no Renkinjutsushi Gaiden: Sore mo Mata Kare no Senjou 5. Hagane no Renkinjutsushi: Prototype 6. Untitled omake