User blog comment:AquilaeAltair/OnS Theories. First Theory (Season 2) - Yuichiro, the real Michaela./@comment-36009152-20190528174345/@comment-38762161-20190903051213

Hm it's not time travel but the fact that the current Yu has a soul. The Yu we saw in Greece was more like someone empty or dead inside, not human even if he was disguised as one.

I think that Yu from the actual time is in fact the real Michaela; even if the story of vampire Mikaela relates about Michaela descending to Earth; I think that the real one got lost and fell to Earth for a mission; but in the process, he ended up getting lost. I base a lot on the hierarchy of archangels for this....Lucifer being the first one, next Michael and we can keep going.

I believe that Sika Madu, to a certain extend took many things from Yu after being punished, which is something that could explain as to how he was able to turn into a seraph without losing control