Tenkai

Tenkai (天海) may refer to one of the listed subjects:


 * Tenkai Nankōbō - Ieyasu's famous monk advisor who dressed himself in black robes.
 * Amami - A character who shares the same spelling in kanji in Harukanaru Toki no Naka de 5.
 * Heavenly Realm - A place in Harukanaru Toki no Naka de Yume no Ukihashi which shares the same pronunciation.