Iwakura Tomomi
In 1875, based upon his experiences in Europe, Inoue published two volumes of documents called ("Constitutions for Kingdoms"), which was primarily a translation of the Prussian and Belgian constitutions with Inoue's own commentary, which he submitted to Iwakura Tomomi. Iwakura recognized Inoue's talent and assigned him to work on the project for drafting a new constitution for Japan. Working with German legal advisor Karl Friedrich Hermann Roesler, Inoue worked on the drafts of the Meiji Constitution, and also drafts of the Imperial Household Law. He also cooperated with in the preparation of the Imperial Rescript on Education.