Gonza and Zaruba reflect on Kouga's growth as a knight, remembering him training with his father, Taiga. Out one night with his father, they encounter a Horror, with Taiga becoming Garo to destroy it. Later, Kouga witnesses his father dying at the hands of what he thought to be a Horror, though it is actually a figure named Barago. Kouga trains for years to be able to use the Garoken and fight as the new Garo, eventually becoming the man he is today.
父・大河と修行に励む7歳の鋼牙は、ソウルメタルを用いた修行段階に進んでいた。ある日、ホラーの気配を察知した大河は、鋼牙を繁華街に残し駆け出して行く。鋼牙が父の帰りを待っていると、そこに手作りおもちゃを売る男が現れて、鋼牙に人形を差し出す。だが、そこに戻った大河は何故かその男に剣を突き付けて…。
Gonza y Záruba repasan en el crecimiento Kouga como caballero, le recuerdan el entrenamiento con su padre, Taiga. Una noche con su padre, se encuentran con un horror, Taiga se convierte en GARO para destruirlo.