STORY

Two young adults return to their lost hometown in search of truth
and to bring back what they hold dear.

The town of Hallfein was once situated at the border of three provinces,
and thrived thanks to mining and trade. However, a mysterious disaster struck this peaceful town,
causing most of its residents to disappear.
The town became a restricted area, and only investigators dispatched
from the capital were allowed to enter.

As time passed, restrictions on the town were lifted,
and a plan to restore it was initiated.
Seizing this opportunity,
a young woman and a young man, having come of age
after being driven from Hallfein long ago,
now return to the land they once called home.
The former hopes to restore the shop left behind by her missing grandfather,
and the latter seeks to investigate
the mementoes left to him by his father.
While their reasons for returning differ,
they share one common goal: uncovering
the cause of the townspeople's mysterious disappearance.

After meeting in their hometown, the two embark on a journey together to seek the truth,
unaware of the encounters
and revelations that await them...

A chance encounter within the depths of mysterious ruins...

Upon hearing that mysterious ruins were discovered in the depths of a mine, Rias set out to explore them. She found a chamber with a strange door at the other side, but was cornered by a powerful monster. However, she was rescued by Slade, who had been searching for the same ruins.
Together, the duo managed to defeat the monster. When they approached the door of the ruins, the Geist Core on Slade's bracelet reacted to it and the door opened, revealing a strange room with a starry pattern across the ceiling. There, they found a cauldron used for alchemy, an art that had been lost for centuries.

The key to restoring the lost art of alchemy?

Though it was Rias' first time inside that room, it felt nostalgic to her. Rias could see the cauldron in the room glowing with mana, and at Slade's suggestion, she tried to synthesize something and succeeded. However, the cauldron lost its light after a single use.
Upon returning to the town, the pair tried to convince Camilla, the Restoration Project's supervisor, to let them to investigate the ruins. For Slade, it could provide new leads about the disaster from 12 years prior, while Rias hoped alchemy would help restore her grandfather's store and the town of Hallfein. Thus, the duo joined forces.

Reliable Companions - 1

“Wanderers” from other worlds are also involved in Hallfein's restoration.
The talented adventurer Raze comes to Hallfein after being requested to investigate the dimensional paths. He teaches the inexperienced Rias and Slade how to battle. And as someone from a world with alchemy, he watches over the novice alchemist Rias, sometimes strictly.
Traveling all over in search of a certain medicinal ingredient, the self-proclaimed "Genius Witch" Wilbell also decides to join Rias and the others in investigating the dimensional paths.

Reliable Companions - 2

Totori has come to Hallfein with Klaudia on a request to find a rare ore. She decides to help Rias and the others restore the mine that collapsed twelve years prior. As a fellow alchemist, she wants to help Rias.
As the restoration progresses, Lara and Geron from the Polar Night Alchemists approach Rias and Slade. The alchemist Sophie rushes to save the two from this predicament, having been asked by Resna to assist Rias.