"I came home from duck hunting and my dad said 'the Japanese bombed Pearl Harbor and we're in a war,'" said Denny Hayden, the couple's friend and former classmate.
Miko and George, then teenagers, were among nearly 120,000 Japanese-Americans on the West Coast forced from their homes. Their families spent three years confined to the Poston internment camp in Arizona, where school was taught by fellow internees.
"To each class we had to take our chair or stool along," Miko said. "We got our diploma in Poston, we were the first graduating class."
George was drafted into the Army. When the war ended, Miko worked numerous jobs, including being a hairstylist. The couple married in 1950 and raised their four sons in Orange County. They now have seven grandchildren.
After Hayden found out the couple was still in the area, they were reacquainted. But more than 70 years later, it still bothered Hayden that the couple had never received their diplomas.
"We were very upset to see that happen to them," Hayden said, so he called the school and asked "why not now?"
VIDEO: Tustin couple receives high school diploma after 72-year wait
With a standing ovation at age 90, a week before their 65th wedding anniversary, Miko and George finally received their diplomas Thursday.
"It really feels like graduating," Miko said.
The school is now called Tustin High School, but their diplomas will read Tustin Union High School - 1943.
PHOTOS: Elderly Japanese-American couple graduates from high school