Marc Wilmots' side need only a point against South Korea to top Group H and Origi, a late inclusion in the squad after Christian Benteke was injured, could get a longer run-out than the 33 minutes he enjoyed after replacing Romelu Lukaku and scoring an 88th-minute winner against Russia.
"I was able to come on to the pitch at the Maracana when the tension was at its peak and make the difference," he said. "I'm sure I'll continue to grow and improve thanks to that calmness and score more goals just as important."
South Korea's 4-2 defeat to Algeria left them struggling to stay in the tournament and their coach, Hong Myung-bo, criticised his defenders before imploring his players to start afresh. "We have to turn the page. We must prepare better for the next game, it's our only option," he said.