He organised his first competition 15 years ago, taking the title from the words "sport" and "gomi"—Japanese for rubbish.
He said watching the event's maiden world championship was "like a dream", but he optimistically believes it can grow to an even bigger scale.
"If you form national spogomi associations, my ambition is that it could become an Olympic demonstration event," he told AFP in front of a portion of the almost 550 kilos (1,200 pounds) of rubbish collected by participants.
Armed with gloves, metal tongs and plastic rubbish bags, each team of three roamed a roughly five-square-kilometre (two square mile) collection area in Tokyo's bustling Shibuya district.
Running, ransacking existing litter bins and shadowing other teams were all forbidden, with each team followed by a referee to enforce the rules.
In both of the morning and afternoon sessions, they had 45 minutes to hunt out rubbish and another 20 to sort it into categories.
Points were awarded based on volume and type, with small items such as cigarette ends scoring highly.
Australia's Petrya Williams said that her team had "found some great spots that are like treasure maps".
"I think we've got it for the next round, we know where to look," she said, as she and her team-mates waited to weigh their haul.