Forget Godzilla . . . Zanessa-mania strikes Tokyo! Zac Efron and Vanessa Hudgens were welcomed to Japan by hundreds of screaming fans last night. The pair touched down at Narita Airport on their promotional tour for High School Musical 3. More than 30 police and security guards had to set up a perimeter as the real-life couple made their way through arrivals. "I've never seen anything like it," said a onlooker. "Their fans were screaming and some were crying because they were so happy to see them." The Japan premiere for the film is on Wednesday. <P> <B>Ref: SPL75563 250109 </B><br> Picture by: Scott Larson / Splash News<br> </P><P> <B>Splash News and Pictures</B><br> Los Angeles: 310-821-2666<br> New York: 212-619-2666<br> London: 870-934-2666<br> photodesk@splashnews.com<br> </P>