Rainbow is on a roll lately with their promotional events in Japan.  After coming away with third place ranking on the Oricon daily chart for three days in a row, Rainbow held their first hand shake event to celebrate the release of their debut single, "A". On September 17th, about 3,000 fans gathered around the AX Hall in Shibuya.  Rainbow split the event into two different segments, to meet and greet with 1,500 fans at a time.  Because it was a debut event, they didn't expect so many fans to show up.  The girls and representatives alike, however, were pleasantly surprised to see the explosive turnout. Rainbow performed for 20 minutes ahead of the hand shake event with songs like "A", "Gossip Girl", and "Mach".  This event comes just after the success of their album release, which attracted 2,000 fans. [gallery link="file" order="DESC" columns="4"] Source + Photos: Chosun via Naver