Kotonoha no Miko to Kotodama no Majo to

Fujieda Miyabi's The Caged Miko and the Whimsical Witch depicts a romance between—you guessed it—a miko and a witch. In the first chapter, Letty, the witch, ends up playing the knight in shining armor to Tsumugi, a young woman magically bound to her family's shrine.