Welcomed into the Takimura family, Tetsuo meets Hagane, a girl who lost her mother a month ago. She shows Tetsuo "something" that her mother made in her workshop. Meanwhile, an organization called "E-RDE's Light (Vierde)," led by a mysterious man known as the Colonel, learns of Tetsuo's survival and begins to make ominous moves. The shadow of a new enemy is quietly closing in on Mishima Mall!

The half-destroyed Yukio is under heavy attack from the mighty monster "Hercules," the Commander's Sword, which emerges from the snow. Tetsuo desperately tries to defend himself, but he is gradually cornered by the enemy's overwhelming power and calculated tactics. In this desperate situation, the measure Tetsuo takes to turn the tide of the battle is... communication for the first time!