BBL (Building Blocks Library) is a collection of graded readers for students of English as a second language. These books were developed by mpi, one of Japan's leading providers of training for English teachers and a publisher of English teaching materials.

There are eleven levels of BBL readers and the highest three levels, 7 to 9, are now available from Sakkam Press worldwide as ebooks. These higher levels draw readers into the exciting world of a close group of friends and their compelling and contemporary real-life adventures. Each book can be read independently, but the stories are woven with common threads that tie the books and levels together.

The themes tackled in Level 8 include Themes include feeling misunderstood by others, the pressures of the expectations of parents and friends, bullying, and sportsmanship.