Halloween weekend for 2019 has ended in Tokyo and people await for October 31st for Halloween Day for one more major gathering, which is typically in Shibuya.
Here are videos of Halloween in Tokyo for 2019:
Ikebukuro Halloween Cosplay Fes
Harajuku Omotesando Hello Halloween Pumpkin Parade 2019:
Roppongi Halloween Parade:
And Kawasaki in Kanagawa Prefecture had their huge Halloween event: