To the curious ones why Hinako is desirable for other youkai or monsters to eat, but revolting to Shiori. She has essentially mermaid blood coursing through her right now, the properties of both mermaid flesh and blood seem to be valued by not only humans, but other monsters as well seeing as there are monsters that try to nibble on Shiori to get flesh. So with Hinako still being a human, she exudes that same desirability but is also a vulnerable human incapable of defending herself, making her quite the target. Shiori has effectively imprinted Hinako, but the mark she left is barely visible unless the other monster gets so close to realize it, so the only one negatively affected to desiring to eat Hinako is Shiori.