The Dark Dragon's Nest (暗黒竜の寝所), also known as the Sanctuary of the Dark Dragon, is the resting place of Zoro-Agruga, hidden in a phase space in the Heimdallr Catacombs.
Trails of Cold Steel III[]
Background[]
On the day before the Summer Festival, both campuses of Thors Military Academy cooperate to capture all Hercules agents hiding in Heimdallr. However, Class VII receives reports of some agents behaving strangely and vanishing. Emma and Gaius trace the disturbance of the Septium veins to the catacombs under the Imperial Museum, where a massive gate has appeared, surrounded by crimson Pleroma Grass.
After some Nighttouched Hercules agents cross the gate to fight Class VII, Roselia Millstein appears to suppress them and tell Class VII the history behind Zoro-Agruga. New and old Class VII cross the gate and enter the dragon's domain, working together to get to the sanctuary where it rests. They manage to defeat it with Valimar's help, and Roselia appears again to prevent the dragon's curse from corrupting Valimar like it did Testa-Rossa.
Maps[]
Enemies[]
| Enemy | 1F | 2F | 3F |
|---|---|---|---|
| Octofiend | A/B | A | B |
| Evil Eye | C | C | W/ Lucifuge, Werewolf |
| Speculo I | A/B | A/B | W/ Others (A/B) |
| Speculo II | A/B | A/B | W/ Others (A/B) |
| Vampire Bat | C | C | C |
| Weed Beetle | C | C | W/ Ginosha-Zanak |
| Vargem | A | B | A/B |
| Werewolf | C | C | C |
| Star Lambda | B | A | A/B |
| Hercules - Rifle | C | A/B | A/B |
| Hercules - Greatsword | C | A/B | A/B |
| Iglute Garmr | A | B | A/B |
| Ol-Gadia | B | A | A/B |
| Lucifuge | C | C | C |
| Ginosha-Zanak | C | C | C |
| True Zoro-Agruga - 1 | Story (A) | ||
| True Zoro-Agruga - 2 | Story (B) | ||
| True Zoro-Agruga - 3 | Story (C) |
Treasure Chests[]
| Map | Key | Contents |
|---|---|---|
| 1-A | 1A |  EP Charge IV
|
| 2A |        All Sepith ×200
| |
| 3A |  Sagittarius Shoes
| |
| 1-B | 1B |  U-Material ×5
|
| 2B |  Freya Regalia
| |
| 3B | Tear All Balm
| |
| 1-C | 1C | U-Material ×5
|
| 2C |  Aeolus Gem
| |
| 3C | Celestial Balm EX
| |
| 2-A | 4A | Tear All Balm
|
| 5A |  Black Zemurian Ore Shard
| |
| 6A | U-Material ×5
| |
| 7A |  Deep Ocher
| |
| 8A |  Skanda Gem
| |
| 2-B | 4B | Black Zemurian Ore Shard
|
| 5B | Abyss Shadow
| |
| 6B | All Sepith ×200
| |
| 7B | Celestial Balm EX
| |
| 8B |  Deus Gem
| |
| 2-C | 4C | All Sepith ×200
|
| 5C | Ulysses Regalia
| |
| 6C | Aquarius Shoes
| |
| 7C | Black Zemurian Ore Shard
| |
| 8C | EP Charge IV
| |
| 3-A | 9A | Brave Seed
|
| 10A | Celestial Balm EX
| |
| 3-B | 9B | Spirit Incense
|
| 10B | EP Charge IV
| |
| 3-C | 9C | Tear All Balm
|
| 10C | Zeram Powder
|
Quests[]
- Field Exercises - Heimdallr: Class VII must stop Zoro-Agruga from returning at full power.
