Nihongo toiu gaikokugo; Nihonjin no tame no nihongo sainyûmon; Ryûgakusei ni oshiete wakatta, igai na omoshirosa - muzukashisa Kôdansha gendai shinsho, 2013
Sonnensaison: Drehbuch
Masumura Yasuzô: Eine Retrospektive.
A grand design for peace and reconciliation : achieving Kyosei in East Asia
China, Japan and Regional Leadership in East Asia
Towards Monetary and Financial Integration in East Asia
Kawaru kaikei, kawaru nihon keizai : "Jôhô kaikei" no jidai
Nihongo kara mita nihonjin : Shûtaisei no gengogaku