Shirogane no Ishi: Argevollen episodes

ngelmia invades Arandas in the name of liberating the people, and pushes the Arandas army back to their fortress known as the Great Wall.

Tokimune, acting on his own, has driven them far off route, and the Independent 8th Attack Unit is forced to break through enemy lines.

The 8th Unit fights off their pursuers and unites with the main force. At the Gate of No Retreat, a fortress between the two countries, they are given the mission to support the forces' retreat and…

The successful retreat at the Gate of No Retreat brings the Ingelmian advance to a halt, and puts the war into a stalemate.

The Ingelmia forces split and attempt to attack the Arandas capital from multiple directions. The fastest advance is in the Gatar mountains, so the 8th Unit is sent there.

Unforeseen trouble brings the entirety of the enemy's firepower down on the 8th Unit. But Argevollen, the core of the mission, shuts down and is exposed to vicious long-range artillery fire.

The 8th Unit is given unofficial R&R on the neutral island of Bellhals. Jamie has a coupon to a luxurious spa on the island and plans to visit, but is called by her boss at the last minute to…

Samonji remembers an experiment that once took place in Bellhals. He meets Tokimune and Jamie in a field filled with sunflowers.

Tokimune finally decides to take a step forward as a soldier. His Argevollen is called the Demon of Arandas by the Ingelmians because of its incredible power.

The Independent 8th Unit has destroyed Zong base and stopped Ingelmia's assault. They take a short break in Wishpe when an order comes in that an enemy is attacking.

The 8th Unit holds a party to celebrate their success at Wishpe. As everyone enjoys themselves, Tokimune is told by Samonji about his sister and the experiment she participated in.

Eight years ago, Samonji and Suzushiro are assigned to security at an Arandas Trail Krieger research station. Reika Nanjou is a test pilot there.

Unit 8 is given the latest technology: the Seiran. The 8th is now far stronger, and is also given a new pilot. Namie Portman: a fellow student of Tokimune's and a new test pilot.

Arandas forces are being wiped out in border areas. Each force is wiped out completely, with no survivors.

The Kitazamahara base is wiped out in the battle between the Argevollen and the new enemy unit. The 8th retreats to Pudder base to recover and regroup.

Samonji forbids Tokimune from piloting the Argevollen. Tokimune listens to a recording of himself going out of control and attacking his own allies, and Samonji tells him a shocking truth: the…

The 8th Unit withdraws from the Pudder supply base as a huge legion advances. Samonji refuses to allow the Argevollen to launch, despite the fact that they're outnumbered, but Cayenne puts pressure…

The 8th Unit successfuly retreats after a fierce battle with the Sturm Alpha. But Tokimune collapses after leaving the Argevollen, and is in a coma.

Arandas and Ingelmia both want to make peace to end the stalemate. Samonji is brought out by Cayenne, who tells him that if the war ends like this, all the sacrifices will have been for nothing.

The Perphevollens have been put into combat. Samonji has left the 8th Unit to lead them. They're pushing back the Ingelmia army and winning many battles.