Prince Sunnokeshi

Prince of a constitutional monarchy Buriburi Kingdom who appears on the equator mostly 500km southeast in Ceylon island Sri Lanka. Buriburi Kingdom is small island country with area about the same as Shikoku.

Sunnokeshi looks just like Shinnosuke. his name is logogriph of Shinnosuke.
However, Sunnokeshi refined and is polite.
He is kidnapped to White Snake-Dan because he knew a secret about treasure of Buriburi kingdom.