Japan's No. 10 Yuka Momiki and No.18 Mami Ueno scored three goals each, while Nigeria scored one goal into their own net.
Leading by 2 in the first half, Japan continued its firey form in the second half in front of a crowd of 1,651.
Going into the second half with 66 percent ball possession, Japan was awarded an early penalty in front of Nigerian goal mouth seven minutes into the second half.
Japan's Momiki scored her second goal for the night in the 51st minute, expanding their lead 3-0.
An early run out by Nigeria's goal keeper would have cost them a goal of it wasn't for her defender No.14 Patience Kalu, who swept the ball away from the Japanese forwards.
An embarrassing home goal by Nigeria's No. 13 Mary Ologbosere extended her opponents' lead to 4-0.
A corner kick by Japan's No 6 was cleared off well by Nigeria keeper.
Japan's Mami Ueno scored an easy clear goal, further extending their lead in the 62nd minute to 5-0.
Another water break was given to the ladies with Japan quickly taking the field while a tired looking Nigeria side later followed.
Japan's No.18 Ueno scored her third goal for the match, extending their lead 6-0 in the 82nd minute.
An additional time of 4 minutes was added on the clock after the 90th minute to allow Nigeria an opportunity to score but it was Japan's No.10 Momiki who utilised the additional time to get her team home, 7-0 scoring her third goal of the night.
Momiki took the player of the match this evening.