Read more stuff, translated by gematsu:
■ True Reverie Corridor
By progressing through the main story of
The Legend of Heroes: Hajimari no Kiseki, you will be able to access “Reverie Corridor,” a mysterious extradimensional space, from each story route.
There are no limits to accessing “Reverie Corridor,” meaning you can come and go as you please as you progress through the main story.
Progressing through True Reverie Corridor
By progressing through “Reverie Corridor,” which is a vast dungeon divided into multiple layers, you can unlock or upgrade various elements.
Since party members from each route of the main story are all gathered in “Reverie Corridor,” only here can you attempt to clear the dungeon with a free formation of party members not determined by story route.
Unlock Episodes and Mini-Games in “True Reverie Corridor”
By defeating some of the enemies that appear in “Reverie Corridor,” such as the formidable “Guardian Beasts,” you may obtain an item called a “Sealing Stone.”
By releasing this “Sealing Stone,” you can unlock character-focused “Episodes” or “Mini-Games” as side content separate from the main story.