'Hanrei Hyakusen', the compilation of (normally 100 - hyakusen means a selection of 100) cases and comments has long been popular amongst Japanese practitioners, academics and law school students wishing to obtain a quick and reliable understanding of a specific field of law. Leading cases much more than statutory provisions are essential for understanding the reality of Japanese business law. The editors have compiled 72 of the most important decisions in this field, and have asked leading Japanese experts or foreign specialists of Japanese law working in academia or private practice to provide comments on these. The cases and comments can serve as practical guidance, as a basis for academic research or as classroom teaching material. The compilation should, therefore, be useful for all those who need to understand the various fields of Japanese business law - practicing lawyers, academics and last but not least students of Japanese and international law.