Johnny News Japan

How can i possibly visit or see an actor or actress in Japan or Korea ?

well , when i go there , at first i want to see a star .. im a fan .. but i dont know how to .. i want to see any of the members of KAT-TUN , NEWs , ARASHI , or anyone in johnny's entertainment .. while in korea i want to see the cast of boys over flowers .. can someone tell me how ? oh .. i also want to see oguri shun , horikita maki and kenichi matsuyama
well , here in the Philippines .. i can see star by visiting ASAP , wowowee etc ... but in JAPAN and KOREA .. how ???

i dont completely understand the question but i'd say buy a plane ticket.