Website to purchase concert tickets

Hi guys,

Can anyone recommend me websites to buy nationwide concert tickets in Japan (for example something like viagogo.com)?

Preferably if they're Japanese sites where I can buy the ticket through a conbini or something, i.e methods other than paying by credit/debit cards because I don't have one in Japan at the moment. I'd prefer not to use my debit cards from my home country due to the exchange rate and fees.

Thanks a bunch!

http://t.pia.jp/
ticket pia

this might be a good read for you:
http://www.japanconcerttickets.com/howto/buying-concert-tickets-japan/

Thanks for the information. :)