"Just the right amount of study for those who don't want to be ignorant."
A fun and easy way to re-learn your knowledge

Moon and Sister, a YouTube channel that started from this honest feeling that everyone has felt at least once.
By solving current affairs, culture, and common sense quizzes at a middle school level of difficulty, and through moments where you think, "I've heard that a lot, but I can't remember it!", you can revive forgotten knowledge and convey vague common sense in various fields such as science, culture, psychology, economics, politics, and general knowledge in a quiz format.
It brought back vivid memories that were vague in our minds, and added the joy of confirming what we already knew, as well as the joy of learning something new.
Now, that popular content has been published as a book.

This book contains a total of 210 quizzes, including the popular quizzes from the Moon and Moon Sister channel, as well as new questions that can only be found in the book, allowing you to review and experience something new at the same time.
It is divided into seven parts: science, Korean/Chinese characters, culture/psychology, economics/politics, history, general knowledge, and philosophy/religion/ideology. It is great for reading and solving on your own, or for having fun with friends or family by taking quizzes.
Let's rediscover forgotten knowledge and awaken our brains through quizzes.
It will be the best introductory book for 'those who do not want to be ignorant'.
This book, which reduces the burden of studying and increases fun and curiosity, will be a reliable companion that helps anyone comfortably develop their knowledge.

Now, let's stimulate your brain.
Forgotten knowledge will be revived, and your world will expand a little more.