8 books in series

Power Japanese

Power Japanese is a 8-book series with 8 released primary works first released in 1992 with contributions by Jay Rubin, Charles De Wolf, Hiroko Fukuda, Kakuko Shoji, and Mamiko Murakami.

Making Sense of Japanese: What the Textbooks Don't Tell You
Love, Hate and Everything in Between: Expressing Emotions in Japanese
Japanese Core Words and Phrases: Things You Can't Find in a Dictionary (Power Japanese Series) (Kodansha's Children's Classics)
Basic Connections: Making Your Japanese Flow
How to Sound Intelligent in Japanese: A Vocabulary Builder
Switching Smoothly between Casual and Polite Japanese: Sixteen Dialogues, Quizzes, and Tons of Tips for Intermediate Learners
Cover 6

Jazz Up Your Japanese with Onomatopoeia

Making Sense of Japanese : What the Textbooks Don't Tell You