Board Thread:Chapter Discourse/@comment-36009152-20190303221457/@comment-30241447-20190304224702

That reincarnation theory is a good idea. Although, I think I have another idea (probably more absurd).

If Yu wields the Second Trumpet, that would mean he is literally part-angel. If anything, perhaps this Yu is the same Yu in the past, kept alive via the angelic power. Saito did state in Volume 7 of Catastrophe that Yu's "parents" weren't even his real parents. Perhaps this is a clue.