Board Thread:Questions and Answers/@comment-200.246.78.2-20151030195927/@comment-25121259-20151031185245

No, Hakumen existed normally in the World during the Phase Shift series (of course he was at 100% back then). After dragging Terumi with himself into the Boundary, he eventually ended up at the Edge (whether he ended up there right after dragging him, had flown into it over time or was moved to it, is unclear).

Well, depends on how one looks at it, in a way it could be said that only 20% of his existence was brought back from the Edge, or that only 20% of himself is projected onto the World. Either way, it's kind of a contradiction of Hakumen being in two places/planes of existence at the same time, with majority of him still being in the Edge.