The Sengoku series includes: Sengoku 1 → Sengoku 5 → Sengoku 5'74 → Sengoku Z → Sengoku S → Sengoku R → Sengoku 8 → Sengoku 9 → Sengoku 10 → Sengoku DX → Sengoku 6 → Sengoku 7 → Sengoku 10 → Sengoku A → Sengoku J → Sengoku Super '95 → Sengoku Select S → Sengoku JC → Sengoku Najim → Sengoku FT → Sengoku Special 95 → Sengoku Special 92 → Sengoku Special 90, and now the Sengoku 1500 and Sengoku 2000, which are used as the starting point for pens, are also available. This series of 23 rackets, spanning approximately 60 years, began with Sengoku 1. Even those who consider themselves Butterfly equipment enthusiasts would not be complete without this racket.