Hironobu joined Mitsui & Co. in 1979 and is currently Counselor, served various positions including Chief Human Resources Officer (2010-2013) and COO for Europe, Middle East & Africa Business Unit (2013 – 2016). Hironobu founded Global Management Academy in collaboration with Harvard Business School in 2011 in order to develop young leaders and change agents in Mitsui and Co and its business partners. He also initiated to establish Global Management Program in cooperation with London Business School in 2014. The both programs have been successfully developing talents with global leaderships. He participated WEF in 2015/2016 and is regular participant in The European Government Business Relations Council (Ad Hoc Council) since 2013.