if you're wanting to buy the tickets, wewe can't. Tickets have been sold out for maybe a month. But, wewe can prob check ebay. Maybe some people are selling them for over priced there if wewe really want to go. But do wewe really want to risk your hearing?
There will be so many fangirls there. The room fits a certain amount of people, but I'm sure the fangirls will pack in. Plus they'll be screaming, and if wewe don't get a good seat, wewe won't be able to hear anything. If wewe get annoyed easily, especially with the fangirls, I suggest just watch a live streaming video if they have them online.