Tokyo's famous Shibuya district is bracing for the return of large crowds of Halloween partygoers this weekend following the removal of coronavirus restrictions and Japan fully reopening its borders to foreign tourists.

The district, known for its iconic scramble crossing, is on high alert for a possible return of vandalism and drunken behavior seen in previous years, and is setting up signs around Shibuya Station urging people not to drink on the street and asking revelers to follow the rules.

"There will undoubtedly be an increase of people this year. Young people tired of having restrained themselves will let loose," said Toshiyuki Ono, 81, who heads a Shibuya store owners' association.