▁major ▁gates . ▁ ▁Black ▁Sea ▁- ▁A ▁body ▁of ▁water ▁that ▁is ▁north ▁of ▁the ▁Y ellow ▁Sea ▁and ▁borders ▁the ▁kingdom s ▁of ▁En , ▁K you , ▁and ▁Ry u u . ▁ ▁Blue ▁Sea ▁- ▁A ▁body ▁of ▁water ▁that ▁is ▁east ▁of ▁the ▁Y ellow ▁Sea ▁and ▁borders ▁the ▁kingdom s ▁of ▁En , ▁Ke i , ▁and ▁K ou . ▁ ▁Red ▁Sea ▁- ▁A ▁body ▁of ▁water ▁that ▁is ▁south ▁of ▁the ▁Y ellow ▁Sea ▁and ▁borders ▁the ▁kingdom s ▁of ▁K ou , ▁S ai , ▁and ▁Sou . ▁ ▁White ▁Sea ▁- ▁A ▁body ▁of ▁water ▁that ▁is ▁west ▁of ▁the ▁Y ellow ▁Sea ▁and ▁borders ▁the ▁kingdom s ▁of ▁Han , ▁K you , ▁and ▁S ai . ▁ ▁Void ▁Sea ▁- ▁Also ▁known ▁as ▁the ▁Ky ok ai , ▁the ▁Void ▁Sea ▁is ▁a ▁large ▁sea ▁that ▁surr ounds ▁the ▁Tw elve ▁Kingdom s . ▁A ▁sh oku ▁is ▁the ▁only ▁way ▁to ▁cross ▁the ▁Ky ok ai . ▁Ky ok ai ▁separ ates ▁the ▁outer ▁kingdom s ▁of ▁Hou , ▁Ren , ▁Sh un , ▁and ▁Tai ▁from ▁the ▁eight ▁main land ▁kingdom s . ▁ ▁Tw elve ▁Kingdom s ▁▁ ▁En ▁- ▁The ▁Kingdom ▁of ▁En ▁is ▁a ▁fl our ishing ▁kingdom ▁of ▁the ▁Tw elve ▁Kingdom s ▁that ▁is ▁between ▁Ke i ▁and ▁Ry u u ▁and ▁is ▁one ▁of ▁the ▁four ▁" middle " ▁kingdom s . ▁It ▁is ▁ruled ▁by ▁Sh ory u ▁who ▁has ▁re igned