Big Four Japanese firm Nagashima Ohno & Tsunematsu has officially launched a Jakarta office in Indonesia—its fifth outfit in Southeast Asia—through a strategic alliance with Indonesian law firm IM & Partners.

IM & Partners was founded by Nagashima Ohno lawyer Ichsan Montang. Qualified in Indonesia, he joined the Tokyo-based firm in Singapore as a foreign attorney in 2017 from the Indonesian firm Assegaf Hamzah & Partners.