In 1904, when Tokyo Senmon Gakko was renamed Waseda University with establishment of the Department of Commerce, he cooperated in its launch with Tameyuki AMANO and taught Japanese commercial history concurrently as the professor of Tokyo koto shogyo gakko (Tokyo Higher Commercial School) and as the instructor of Waseda University; however, he became sick before long and died of illness at the young age of 48 (the age of 46 by the currently used age system).
明治37年（1904年）、東京専門学校が早稲田大学となり商科が設置されると、天野為之とともにその立ち上げに協力、東京高等商業学校教授と早稲田大学講師を兼務して日本商業史を教える、だが、間もなく病に倒れ、48歳（満年齢では46歳）の若さで病死した。