This special edition of Boom Boom Back features the members of BE:FIRST. I purchased it, but I've kept it sealed at home, so I'm offering it for sale. - Title: Boom Boom Back - Feature: BE:FIRST - Issue: Special Edition - Members: SOTA, SHUNTO, MANATO, RYUHEI, JUNON, RYOKI, LEO - System: BBB EXTRA BASS SYSTEM Thank you for looking.