In the Preface, Okawa writes, "It would be like a dream if the mass media in the world, including Japan, were permitted to conduct a completely exclusive interview with Kim Jong-un now. Although a spiritual coverage, this book realized over 70% of that wish." What's Your Aim, Kim Jong-un? is an English translation of a spiritual interview by Master Ryuho Okawa of Happy Science that was recorded in October 2017. It is an interview with the guardian spirit (or subconscious) of Kim Jong-un, the supreme leader of North Korea.

This time, Happy Science decided to publish this book urgently in order to inform the world of the true aim of leader Kim Jong-un which remains hidden and is one of the major factors of insecurity in the international community.