"I was really happy that I could DJ. Everyone says it's great," Itsuki said after achieving the record.
He set the new record by performing in front of a crowd of adults and other children for more than an hour at just 6 years and 114 days old.
"He didn't give up thinking he could become a world record holder," his mother said.
Itsuki played used professional Pioneer XDJ AERO decks to play a series of tracks and also had the opportunity to fire a T-shirt cannon into the crowd.
The young DJ, who also learned to play drums from one his mother's friends, enjoys playing a mixture of disco and rock music when he DJs
Itsuki said Swedish DJ Avicii is one of his favorites and that watching others inspired him to try it out himself.
"I saw people DJing and thought it looks fun," he said.