Ideal World

The Ideal World (本質（イデア）の世界; literally "World of [essence; true nature]") is a fundamental realm of the universe, together with the Physical World and Astral World.

Trivia

• The Ideal World is conceptually Platonic in origin, based upon Plato's theory of forms, whereby there exists a heavenly realm (known as the hyperuranion and informally as the "Platonic realm") containing pure ideas (or forms) which are perfect, immutable archetypes (or essences) that are imperfectly mimicked by all material things.