From an anime magazine, we get an additional fact about what Yusaku does as a hacker.

The “Yu-Gi-Oh!” series is about Duels in which the hero, always a young boy, and his friends use cards. The Sixth such show is “Yu-Gi-Oh! VRAINS”, has been determined to air this Spring.

The hero this time is the young boy named Fujiki Yusaku, a hacker who has the sort of sharp mind that can solve mysteries. He transforms while in VR (Virtual Reality) Space taking on the alias and identity of “Playmaker”. Just as there have been a variety of special duels in different worlds and times in series past, look forward to what new kinds of duels will take place!

Cast and Staff yet to be announced