>>4452339I have to give advice based on judgments. So it seems the subject is not moving horizontally so it implies on-camera motion with slow shutter speeds.
It looks like a stage, so I doubt they would allow the phootgrapher to position a flash close to him, so we discard the 2nd curtain option.
Finally, it seems like his expressions are to clear for that kind of effect and they change quite drastically. Wo my vote is for a photoshop of about 2-3 photos with the white balance all the way down to the left.
Again, this is a judgement based on a single photo and that's how I would "replicate" it if I wanted to.