Update: Luckily found 2 tickets today in Yokohama Ticket Shibuya. I'm a little confused about the tickets though as they seem kinda different to each other. One is large and purple/pink with artwork on it and A147 written on it. The other is smaller and green, seemingly bought from 7/11 with B144 on it. Do the numbers designate different areas of the venue or a seating plan? Will I be able to hang out with the person I got the 2nd ticket for or will we be separated? Cheers.