I do think bloodlines do have a factor into this but not 100% sure if miko's father has direct ties to it
good point on #2 which makes this infinitely more creepier O.O
Right. It's just that usually in supernatural things like this, it's passed down in the blood (even if it isn't active in every generation).
And maybe the ghost that is with her father is also like a god? Since it can calm down michiro's tentacle...
But my big concern on this manga is the big guy that they woken up accidentally when they fought in the shrine ... Bc at the end of it they showed a damaged tomb with bells in it and a big shadow as big as a mountain showed up
So, I have a few theories. They aren't spoilers because they are theories, but the comments may contain possible spoilers.
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1. Hana and Miko both come from priestess bloodlines. Miko's ability to see the ghastly figures so clearly and Hana with the ability to purify them. I think they'll work together on exorcisms when Hana learns about her power.
2. The "middle aged" man that Romm said isn't really a random middle aged man ghost may appear that way to Miko because he's currently a low threat level. It looks like he's getting closer to hernamd he may change to what Romm sees when he does. But that makes me wonder something else...
3. What if Miko's ability came from her father? I was between Romm:s response about the picture, the man also showing up in the dad's picture, and how ghost dad is oddly comfortable with a monstrous looking spirit got me thinking about it.