JUST A HEADS UP: They are going to send the tickets only in Japan so people need a Japanese address.
Go to this site: http://l-tike.com/d1/AA02G04F1.do?DBNID=4&ALCD=1&STID=ikg
And follow the instructions below:
PAYMENT is to be made at LAWSON
(it’s a convenience store)
Note: The deadline of submission is until April 16, 11:00pm JST
The results will be published on the same site; just put the email address and password you used for it. Results will be out from April 19, 2014 3PM JST to April 21, 2014 11:00PM JST
Credits: GmJuico @WeloveSeungYoon of WUAN