Jump SQ.M (Jump Square M, Jump Square Masterpiece)

Japanese: ジャンプSQ.M (ジャンプスクエアM, ジャンプスクエア マスターピース)
Circulation: 2009/08 - 2009/10
Publisher: Shueisha
Links:
Info:
A mook that compiles the one-shot manga from Jump SQ. magazine. Its first volume was released on August 21st, 2009. The second and last issue was released in October 2009.