Katana Gem

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Katana Gem
Item Type Quest
Source Tou-gyou
Item ID 47 (1 gem)
48 (2 gems)
49 (3 gems)
50 (4 gems)
51 (5 gems)

The Katana Gem (剣の玉) is an item in Eastern Mind: The Lost Souls of Tong-Nou. It is a quest item that Rin must collect to obtain the Katana. In actuality, there are five Katana Gems in all, comprised of five multi-colored gems that comprise forces of each of the land's elements.


Should Rin own his primary four Magatamas and speak to Tou-gyou's emblem in the stairway on the Central Mountain, Tou-gyou will bestow Rin the first Katana Gem, the Force of Earth. From there, Rin must traverse to the lands to acquire their respective gems from Tou-gyou's emblems, and unite all of their elements. The remaining Katana Gems must be obtained in sequence. The forces and locations are as follows:

  • Central Mountain: The Force of Earth is given on the stairwell. Rin is directed to the Land of Desire next.
  • Yui-wang: The Metal Force of Eternity given from above King-gyou's pedestal. Rin is directed to the Land of Dreaming next.
  • Mon-chien: The Force of Water, which brings Change, is given at the very entrance of the Palace of Dreaming Ping-chao. Rin is directed to the Land of Life next.
  • Ming-ken: The Force of Wood, which produces Life, is given on the fields of the Land of Life, turning left (towards the forest) and to the right (towards Tou-gyou's emblem). Rin is directed to the Land of Time.
  • Shi-chieng: The Force of Fire is given on the plains of the Land of Time, leaning on the Northern side of the Fire Tower Tong-tah. Rin is directed back to the Central Mountain.


The Katana Gems are primarily used as a means to collect each other. Ultimately, owning all five of the gems, meeting Tou-gyou back at the Central Mountain will have him turn them into the Katana.

Tong-Nou Book Entry

Katana of Five Forces

[...] The five Katana Gems, which represent the five forces, must combine as one to become the Katana of Five Forces.



  • The Katana Gems are the only items that Rin can hold in his inventory that lack an entry in the Tong-Nou Illustrated Book.
    • Oddly, the Katana itself does have an entry, which contains a sentence pertaining to the gems instead of the Katana itself.
Eastern Mind Items
Inventory NameplatesMetal MagatamaWater MagatamaWood MagatamaFire MagatamaEarth MagatamaTong-Nou Illustrated BookAmuletHitogataPeachEyeball-StoneAntWind ChimeMorning GloryKomaCompassEye-GlassesGold IngotSmall MalletPanaceaBottle GourdSun WaterSheep IntestineChopsticksGolden FlowerKey of GoldLittle Box of SoundBell of GoldFlute of WaterKoto of WoodDrum of FireWrenchEyeball of DreamingLeaf SackDisc of WoodRegistration CardMirrorKatana GemKatana
Related FuroshikiMoon WaterFood of DesireRotating Boulder