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Duchy rankSo
Primary culture
Kyushuan (Japanese)

Capital province
Tsushima (4651)

DaimyoGovernment monarchy.png

State religion

Technology group
ChineseChinese technology group
So ideas
Traditions.png Traditions:
+10% Trade efficiency
+20% Trade steering

Trade power.png Wakan

+25% Domestic trade power

Galley combat ability.png Wakou Tradition

+10% Galley combat ability
−1% Yearly navy tradition decay

Morale of navies.png Fight for Tsushima

+20% Morale of navies

Privateer efficiency.png Bahan Ship

+20% Privateer efficiency

Diplomatic reputation.png Tough Negotiators

+1 Diplomatic reputation

Naval force limit modifier.png Port Maintenance

+25% Naval force limit modifier
−5% Sailor maintenance

Technology cost.png Elementary School

−5% Technology cost

Idea bonus.png Ambition:

+1 Yearly navy tradition

So is a one-province minor daimyo on the isle of Tsushima, situated between Flag of Korea Korea and the rest of Flag of Japan Japan. Located on the island of Tsushima, the So clan will have the option to become a Pirate Republic after the Wokou incident has happened. These pirates will now be seen terrorizing the coasts of Korea and Japan.


The Chrysanthemum Throne icon
Unite Japan as a Daimyo.
Kirishitan Japan icon
Start as a Japanese Daimyo, convert yourself and all of Japan to Christianity.
Made in Japan icon
Embrace "manufacturies" institution as Japan by 1655.
Sakoku Law icon
Go full isolationist in 6 Incidents.
Country guides

Eastern technology group Eastern.png Jerusalem.png Jerusalem
Muslim technology group Muslim.png Arabia.png Arabia Ardabil.png Ardabil Hisn Kayfa.png Hisn Kayfa Oman.png Oman
Indian technology group Indian.png Assam.png Assam Bahmanis.png Bahmanis Bengal.png Bengal Orissa.png Orissa
Chinese technology group Chinese.png Bali.png Bali Brunei.png Brunei Dai Viet.png Dai Viet Japan.png Japan Khmer.png Khmer Korea.png Korea Majapahit.png Majapahit Malaya.png Malaya Pagarruyung.png Pagarruyung Pasai.png Pasai Sunda.png Sunda
Nomadic technology group Nomadic.png Jianzhou.png Jianzhou Timurids.png Timurids Uzbek.png Uzbek

Central African technology group Central African.png Mutapa.png Mutapa
East African technology group East African.png Ethiopia.png EthiopiaKilwa.png Kilwa
Muslim technology group Muslim.png The Mamluks.png MamluksTunis.png Tunis
West African technology group West African.png Mali.png Mali

Western technology group Western.png United States.png United States
Mesoamerican technology group Mesoamerican.png Maya.png Maya
North American technology group North American.png Caddo.png Caddo Cherokee.png Cherokee Iroquois.png Iroquois

Andean technology group Andean.png Chachapoya.png Chachapoya Cusco.png Cusco Muisca.png Muisca
South American technology group South American.png Mapuche.png Mapuche