By Sam Nussey TOKYO, May 9 (Reuters) - Digital payments processor Opn, formerly known as Synqa, said it had raised $120 million in a Series C+ funding round, becoming a rare unicorn, top 10 or startup worth more than $1 billion, in Japan. The startup raised funds from the venture capital arm of the government-backed Japan Investment Corporation, Mitsubishi UFJ Financial Group with trade ministry...
