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|Wondrous Soroban of Kaiu Haruko|
|Created by:||Kaiu Haruko|
|First used by:||Kaiu Haruko|
|Currently in the possession of:||Lost in the Shadowlands|
Kaiu Wall Edit
In 716, during The Maw's attack on the Crab lands, Kaiu Haruko devised the abacus to shorten the time needed to design the Kaiu Wall and to plan the logistics for its construction. In four days she accomplished the task, but before the wall was finished she had died in the fight. The abacus was held by her three students. 
|This Crab Clan related article is a stub. That means that it has been started, but is incomplete. You can help by adding to the information here.|