This is the first book in the 語感 をみがこう 見て・くらべて オノマトペ！ series, which translates as "Hone Your Word Sense — See and Compare Onomatopoeia!" As the title explains, the books let you "see" and "compare" Japanese onomatopoeia. The book is filled with visual elements such as colors and illustrations, and it doesn't feel like formal studying when you read it. The illustrations help you to picture situations and understand the subtle nuances of onomatopoeia. What's more, they often compare onomatopoeia that have similar meanings to deepen your understanding of the nuances. There are also a few short columns that focus on differences in nuance, with interesting themes. For example, focusing on onomatopoeia that are used to express emotions, the first book talks about which one feels angrier out of ぷりぷり and つんつん.
The series is all written in Japanese, but designed to be understood by Japanese children, so it uses furigana and accessible language. It also includes real-life examples, some of which are quoted from Japanese books. Despite its joyful presentation, the series is a very reliable Japanese learning resource. It was created by Masahiro Ono, who is the leading authority in Japanese onomatopoeia research and has published most of the books available on the subject. If you are looking for Japanese reading material, and are interested in onomatopoeia, this is the perfect book to pick up!