In the one-for-one contest, Toguchi, a 56-year-old former member of the Nago city assembly, garnered 20,389 votes and the 72-year-old incumbent 16,931 votes.
Voter turnout came to 76.92 pct, up 0.21 percentage point from the previous mayoral election. A record 21,660 people, about 44 pct of the eligible voters in the city, had cast ballots before Sunday.
It was the first mayor's race in Nago since the central government started in April last year seawall construction off the coastline of the city's Henoko district for the relocation of the U.S. Marine Corps' Futenma air station in Ginowan, also in the southernmost Japan prefecture.
Backed by Okinawa Governor Takeshi Onaga, Inamine called on voters to help him win his third term to stop the base relocation. He also won support from five opposition parties including the Constitutional Democratic Party of Japan, the Democratic Party and the Japanese Communist Party.
News On Japan - Nov 26
Panicked passengers on a Shinkansen bullet train were evacuated at a central Japan station on Friday night, after a plastic bag containing suspicious liquid was found onboard.
News On Japan - Nov 26
A 29-year-old man has been arrested for meeting an underage teen girl, with sexual intent, after sending her messages, promising to make her "the happiest in the world".
News On Japan - Nov 25
Inui Street, the famed autumn walk within the Imperial Palace in central Tokyo, opened to the public from Saturday.
News On Japan - Nov 25
Nissan Motor Corporation has announced plans to transition all its vehicles produced in the United Kingdom to electric vehicles (EVs).
News On Japan - Nov 25
A JR West Japan train conductor has been arrested for secretly filming eight women in the toilet of the express train "Haruka" while on duty.
News On Japan - Nov 25
Tofukuji Temple, home to 2,000 maple trees and renowned as one of Kyoto's premier autumn hotspots, features the Tsutenkyo Bridge, and the breathtaking 'sea of autumn leaves'.
News On Japan - Nov 25
The strongest cold snap of the season has brought a dramatic drop in temperatures to northern Japan, where snow began falling Friday morning, with up to 50 cm expected in Hokkaido and Tohoku by Saturday evening, and a chance of blizzards.
News On Japan - Nov 24
It's Shichi-Go-San, the Japanese festival season for celebrating the healthy growth of children, with Aibo the robot dog giving prayer at a shrine in Fukuoka, on Friday.