The Ministry of Winter (冬官, Toukan) is one of the Six Ministries and deals with the economic affairs of of the kingdom. It produces and sells Touki (冬器) to authorized weapon dealers, and cares for the royal treasures (宝重). It is also known as the Ministry of Works.
- Daishikuu (大司空) - Minister of the Treasury and Economic Development.
- Shoushikuu (小司空) - The vice-minister of the Ministry of Winter.
- Genshi (玄師) - manufacture jugu.
- Gishi (技師) - researches new technology.
- Shoushi (匠師) - produce goods.