[Note: The Japanese version of this piece can be found here: 初のユニコーンを手にした日本、次に必要なのはユニコープス? ] Japan witnessed its first successful unicorn take flight this week in the IPO of Mercari. Since its launch in 2013, Mercari has become Japan’s leading online flea market platform, allowing people to buy and sell secondhand items on a smartphone app with […]