The Subterranean Study is a location in Octopath Traveler and the dungeon of Cyrus's Chapter 1. This small cavern is located under the Royal Academy of Atlasdam in Atlasdam, where the scholar Russell conducts his research.
Description[]
Subterranean Study is an earthy brown cave, transformed into the private study space of the desperate Russell, who has since decorated the cavern with strings of warm lantern lights, furnishing the area with a cozy glow. The occasional box and barrel suggest that the presence of materials stowed away either for personal use or for sale on the black market, while the dungeon's boss room is a meticulous laboratory outfitted with its own hearth, cupboards, and tables.
Story[]
Some time before the events of the game, Russell sold his house and moved into the Subterranean Study to continue his research. He also began stealing tomes from the Royal Library and selling them to pay off his gambling debts. However, his crimes are soon discovered by Cyrus Albright, one of his colleagues, who confronts him in his study, defeats him, and turns him in to the city guards.
Map[]
Enemies: Danger Level 1[]
| Name | HP |  |
Weak | Leaf (Collect) | EXP | JP | Item (Droprate %) |
|---|---|---|---|---|---|---|---|
| Fire Sentinel | 330 | 1 |     
|
  25 ( 50)
|
5 | 5 | Fire Soulstone (4%) |
| Ice Sentinel | 330 | 1 | 
|
25 ( 50)
|
5 | 5 | Ice Soulstone (4%) |
| Ambling Bones | 361 | 2 |  
|
28 ( 56)
|
4 | 4 | Healing Grape (10%) |
| Black Bat | 349 | 1 |  
|
30 ( 60)
|
5 | 6 | Curious Bloom (20%) |
Encounters: Danger Level 1[]
| Chance | Enemies | Leaf | EXP | JP |
|---|---|---|---|---|
| 35% | 1 x Fire Sentinel | 25 | 5 | 5 |
| 5% | 2 x Fire Sentinel | 50 | 10 | 10 |
| 35% | 1 x Ice Sentinel | 25 | 5 | 5 |
| 20% | 1 x Ambling Bones | 28 | 4 | 4 |
| 5% | 2 x Black Bat | 60 | 10 | 12 |
| Normalized Average | 28.6 | 5.3 | 5.4 | |
Enemies: Danger Level 4[]
| Name | HP | |
Weak | Leaf (Collect) | EXP | JP | Item (Droprate %) |
|---|---|---|---|---|---|---|---|
| Fire Sentinel | 330 | 1 |
|
25 ( 50)
|
5 | 5 | Fire Soulstone (4%) |
| Ice Sentinel | 330 | 1 |
|
25 ( 50)
|
5 | 5 | Ice Soulstone (4%) |
| Ambling Bones | 361 | 2 |
|
28 ( 56)
|
4 | 4 | Healing Grape (10%) |
| Black Bat | 349 | 1 |
|
30 ( 60)
|
5 | 6 | Curious Bloom (20%) |
| Fire Wisp | 389 | 1 | 
|
25 ( 50)
|
5 | 5 | Fire Soulstone (4%) |
Encounters: Danger Level 4[]
| Chance | Enemies | Leaf | EXP | JP |
|---|---|---|---|---|
| 30% | 2 x Fire Sentinel | 50 | 10 | 10 |
| 15% | 3 x Fire Sentinel | 75 | 15 | 15 |
| 10% | 1 x Fire Sentinel 1 x Ice Sentinel |
50 | 10 | 10 |
| 30% | 1 x Ambling Bones 1 x Black Bat |
58 | 9 | 10 |
| 10% | 3 x Black Bat | 90 | 15 | 18 |
| 5% | 1 x Fire Wisp | 25 | 5 | 5 |
| Normalized Average | 58.9 | 10.7 | 11.3 | |
Enemies: Danger Level 7[]
| Name | HP | |
Weak | Leaf (Collect) | EXP | JP | Item (Droprate %) |
|---|---|---|---|---|---|---|---|
| Fire Sentinel | 330 | 1 |
|
25 ( 50)
|
5 | 5 | Fire Soulstone (4%) |
| Ice Sentinel | 330 | 1 |
|
25 ( 50)
|
5 | 5 | Ice Soulstone (4%) |
| Sentinel | 648 | 2 |
|
60 ( 120)
|
10 | 12 | Olive of Life (4%) |
| Ambling Bones | 361 | 2 |
|
28 ( 56)
|
4 | 4 | Healing Grape (10%) |
| Black Bat | 349 | 1 |
|
30 ( 60)
|
5 | 6 | Curious Bloom (20%) |
| Shadow Bat | 565 | 2 |
|
60 ( 120)
|
10 | 12 | Curious Bloom (30%) |
| Fire Wisp | 389 | 1 |
|
25 ( 50)
|
5 | 5 | Fire Soulstone (4%) |
| Ice Wisp | 389 | 1 |
|
25 ( 50)
|
5 | 5 | Ice Soulstone (4%) |
Encounters: Danger Level 7[]
| Chance | Enemies | Leaf | EXP | JP |
|---|---|---|---|---|
| 22% | 1 x Fire Sentinel 2 x Ice Sentinel |
75 | 15 | 15 |
| 17% | 2 x Fire Sentinel 1 x Ice Sentinel |
75 | 15 | 15 |
| 11% | 2 x Sentinel | 120 | 20 | 24 |
| 20% | 1 x Ambling Bones 1 x Fire Wisp 1 x Ice Wisp |
78 | 14 | 14 |
| 15% | 2 x Ambling Bones 1 x Shadow Bat |
116 | 18 | 20 |
| 10% | 1 x Fire Sentinel 1 x Ice Sentinel 1 x Black Bat 1 x Shadow Bat |
140 | 25 | 28 |
| 5% | 1 x Sentinel 1 x Fire Wisp 1 x Ice Wisp |
110 | 20 | 22 |
| Normalized Average | 94.95 | 17.05 | 18.19 | |
Enemies: Danger Level 11[]
| Name | HP | |
Weak | Leaf (Collect) | EXP | JP | Item (Droprate %) |
|---|---|---|---|---|---|---|---|
| Fire Sentinel | 330 | 1 |
|
25 ( 50)
|
5 | 5 | Fire Soulstone (4%) |
| Ice Sentinel | 330 | 1 |
|
25 ( 50)
|
5 | 5 | Ice Soulstone (4%) |
| Sentinel | 648 | 2 |
|
60 ( 120)
|
10 | 12 | Olive of Life (4%) |
| Ambling Bones | 361 | 2 |
|
28 ( 56)
|
4 | 4 | Healing Grape (10%) |
| Shadow Bat | 565 | 2 |
|
60 ( 120)
|
10 | 12 | Curious Bloom (30%) |
| Fire Wisp | 389 | 1 |
|
25 ( 50)
|
5 | 5 | Fire Soulstone (4%) |
| Ice Wisp | 389 | 1 |
|
25 ( 50)
|
5 | 5 | Ice Soulstone (4%) |
Encounters: Danger Level 11[]
| Chance | Enemies | Leaf | EXP | JP |
|---|---|---|---|---|
| 20% | 1 x Fire Sentinel 1 x Ice Sentinel 2 x Ambling Bones |
106 | 18 | 18 |
| 15% | 1 x Ambling Bones 2 x Sentinel |
148 | 24 | 28 |
| 10% | 1 x Fire Sentinel 1 x Ice Sentinel 1 x Sentinel |
110 | 20 | 22 |
| 20% | 2 x Ambling Bones 1 x Fire Wisp 1 x Ice Wisp |
106 | 18 | 18 |
| 15% | 2 x Ambling Bones 1 x Sentinel |
116 | 18 | 20 |
| 10% | 1 x Fire Sentinel 1 x Shadow Bat 2 x Ice Wisp |
135 | 25 | 27 |
| 5% | 1 x Ice Sentinel 1 x Shadow Bat 2 x Fire Wisp |
135 | 25 | 27 |
| 5% | 3 x Shadow Bat 1 x Sentinel |
240 | 40 | 48 |
| Normalized Average | 125.25 | 21.25 | 23.05 | |
Chests[]
Gallery[]
Trivia[]
- The Subterranean Study has the lowest average Leaf yield from random encounters of any inner ring location—and by extension, location in the game—when at the highest possible Danger Level.
- Unlike most other dungeons in the game, the entrance to the Subterranean Study is blocked off by wooden boards rather than a signpost before its corresponding story chapter.