The Bank of Japan's options to reinforce its monetary easing grip will probably be limited even if Asian Development Bank President Haruhiko Kuroda, a strong advocate of aggressive easing, takes the BOJ helm in March.

The government's nomination of Kuroda, 68, apparently reflects its expectations for the former vice finance minister for international affairs to utilize his experience in leading an organization and his expertise as a financial diplomat to convey the bank's policy stance to financial circles overseas.

Kuroda, who has headed the Manila-based financial institution since 2005, submitted his resignation Thursday, effective March 18, the ADB said.