The two-time Olympic marathon champion, alongside the women's world record holder Brigid Kosgei, were the star attraction at the March 6 event, which makes a return after it was postponed last year due to the Covid-19 pandemic.
Kipchoge zipped through the opening stages and was even making world record pace initially.
But a wrong turn in the third 5km section saw the pace drop.
However, the overall standard remained impressive.
" I’m really happy and being back here in Japan after winning the Olympic Games [at the marathon race] in Sapporo… When I said ‘I run strong in Japan’ I did it by running a 2:02. This is my fourth time to win World Major Marathon. I’m really happy," he said during a national TV interview after the win.
Kpchoge's plea comes as Russia and Ukraine are at war with each other.
As at Sunday, an estimated 3,000 Americans have answered Ukraine's call for foreign volunteers to fight Russia's invasion, a representative from the Ukrainian Embassy in Washington DC told the Voice of America news service.
Western nations are not sending troops to fight on the ground in Ukraine, but have been delivering arms to Ukraine to help in the country's fight.
They have also brought in punishing economic sanctions against Russia and Russian oligarchs and leaders.
