Hitoshi had to back to the 1970ies and open a rift in time so that certain events with devastating consequences could be avoided in his version of the future. Did it work? We'll never find out. Or will we...?
These pictures show various stages of working with particles and a replicator inside DAZ Studio. A little postwork was applied in Photoshop, but the main meat and potatoes were done in Iray. I have a video on how I've made it: https://youtu.be/NxUDi3I70QI