Board Thread:Questions and Answers/@comment-109.133.166.48-20191107213701/@comment-44056425-20200118065354

Well he is not the first seraph as he has 4 wings and if he wanted to be the first one he needed to have at least 6 wings as Yuu is the second one and he has 6 wings

Mika is not a progenitor according to the Fanbook of Seraph

He is not the real Michaela, remember that both Crowley and Ferid were supposed to be the Michaela one but they both failed (just like what Noya said on chapter 85) so he is only THE BODY for REAL angel MICHAELA that is mostly SHIKAMA

And as all seraphs have demons behind themselves then he needs to have a demon too and even on Catastrophe at 16 novel 3 Mahiru was mentioned on her notebook that all children on Hyakuya sect (including Mika) were forcefully mixed with demons