甲斐
Kai Province
甲斐国 · かい
Province
Tokaido Circuit
Kanji Literal Meaning
"Worth/Reward"
True Etymology
The characters mean 'armor/first' (甲) and 'worth/reward' (斐/斐). The name is largely phonetic, but 'kai' as a word means 'worth' or 'reward' in Japanese, suggesting the fertile Kofu Basin was considered valuable land worth cultivating. The province was known for rich agricultural land despite being landlocked.
Alternative Theory
The province produced Takeda Shingen, one of Japan's most celebrated warlords. His famous strategy of 'wind, forest, fire, mountain' (風林火山) became a symbol of Kai Province's martial culture, later defining the prefecture's identity far beyond the name's agricultural origins.
Key Facts
| Circuit (道) | Tokaido |
|---|---|
| Reading | かい |
| Active Period | Ancient-1868 |