Project improve logo
This article is currently under construction, as we are
improving all other articles, and the wiki, along with it.

This article is in need of one or more images. Remember NO FAN ART!
Reason: More images of the ruins' structure and design needed.
Underground Ruins
Type Dungeon
Notable inhabitants King Fury
Enemies Imps
Demon Nuts
Snake Sashes
Thunder Ears
Appearances Ōkamiden
Connecting locations

North Ryoshima Coast

The Underground Ruins (「地下遺跡」?; Chika iseki; lit. "subterranean historical site")[1] is a dungeon in Ōkamiden. A site created by the technologically-advanced Moon Tribe at least 300 years ago[2], it was in relatively good state upon its discovery in Ōkamiden.


The Underground Ruins is a keyhole-shaped base of the Moon Tribe at North Ryoshima Coast on Earth, which also acts as a hangar for the dormant Daidarabotchi. The ruins spans six floors, extending further underground, not including the hangar at the deepest point of the location. Each floor has the general shape of a keyhole, but has a unique layout, and the floors are interconnected at several points on each specific level. The entire ruins is made of a strange matter[3], seemingly the same signature grayish-blue, arcane pulsing neon blue marking-bearing metal alloy of the Moon Tribe that is also used to construct the Ark of Yamato[4]; interestingly, these markings are similar to those of Sugawara[5]. and Waka's[6], signifying a certain importance of the two men to the ruins. The first two floors of the ruins, which also has the entrance at the bottom of the "keyhole" shape on the first level, is just several meters below the ground surface, and does not contain much important artifacts or data storage computers, but is still lined with defensive electricity barriers, locked doors and such. In the center of the circular section of the "keyhole" is the staircase to the lower floors of the ruins, and computers start to line the walls of the third floor. One certain room contain several computers that seem to belong to important personnel, namely the head of the Daidarabotchi project[Citation needed] and the one responsible for raising Princess Kaguya[Citation needed]. At the bottom of the ruins is Daidarabotchi's hangar, which is notably much larger than any single area in the entire ruins.


Notice icon2
Spoiler warning: Plot or ending details follow.
Notice icon2
Notice icon2
Spoilers end here.
Notice icon2

Obtained items

Celestial Brush techniques


  • Issun's masterpieces, set 3 piece #6: On the first floor of the ruins.
  • Issun's masterpieces, set 3 piece #10: On the first floor of the ruins upon the second visit, in an area protected by the electricity barrier, which is inaccessible without the Drum.


  • Lucky Coin: Found where there is a fan on the left ledge in the second area of the floor below the sixth. There is a Demon Scroll where two Gashadokuro can be fought on the floor where the entrance to the boss room is. Defeating both of them will drop a Lucky Coin along with the usual reward.


  • Whale Fig.
  • Red Relic
  • Blue Relic


  1. Denshi Jisho's translation of 「地下遺跡」 (「ちかいせき」)
  2. 2.0 2.1 "These ruins appeared 300 years ago."Journal log 2 out of 8 (Ōkamiden)
  3. "The structure is made of unknown materials."Journal log 3 out of 8 (Ōkamiden)
  4. 1"There are strange markings inside."Journal log 4 out of 8 (Ōkamiden)
  5. "Some of them are like Sugawara's crest"Journal log 5 out of 8 (Ōkamiden)
  6. "Some markings are the same as Waka's."Journal log 6 out of 8 (Ōkamiden)

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.