Okay, a quick opener here.
1. Everyone go read Evirus. (spoilers: “To me, it is openly racist to presume dullahans are presumptively inadequate or compromised compared to humans.”
2. That said, I think a dullahan is a poorly thought-out concept that requires too much magic to function – Macchi breaths and eats by exactly what means?
3. Sakie-chan is BEST GIRL. Hikari is the harem lead.
4. I’ve read the manga and I really didn’t like the detectives. I’ll do my best not to drop the anime when they inevitably appear.