Kaoru is hired by school headmaster Yagi to restore a mural of a goddess her father painted years ago but no record exists of what the damaged area looked like. While purifying his sword, Kouga is sucked into an alternate reality where he meets a version of Garo. Kouga, having defeated 100 Horrors, must face an ordeal. Kouga instead tries to battle the Horror Humpty, but cannot hurt it. Kouga soon passes the ordeal and is granted the Makai Horse Gouten, which he uses to defeat Humpty. Meanwhile, Kaoru remembers her father's inspiration for the mural, and restores the goddess to her former glory.
幼稚園の園長・八木修に呼び出されたカオルは、その幼稚園の壁画に懐かしさを感じる。それはカオルの父が描いたものだった。カオルはその絵の修復を依頼されるが、父の想いを理解出来ずに葛藤する。その頃、番犬所にいた鋼牙は突如不思議な空間に転移する。そこが「真魔界」だと鋼牙に知らせた声の主は…。
Kaoru es contratada por el director de la escuela Yagi para restaurar un mural de una diosa que su padre pintó años atrás, pero no existe ningún registro del área dañada. Mientras purifica su espada, Kouga se transporta a una realidad alternativa donde encuentra una versión de Garo.
