I think one of the important ways to approach this manga is to consider it like a series of interconnected stories. There is some plot that slowly develops and quite a bit of world-building, but the majority is divided between many different couples and depicts their love stories. It does take a bit of work to remember every character's name, but if you don't try too hard, for the most part you can follow along with the current pairing's story and you'll just miss out on some cameo mentions and appearances.
I liked the art for the most part. It actually had a bit of an older vibe to it and since I like the BL style from the 90s it's not surprising I like this. Then again, I've read a LOT of BL of all kinds of styles and there are many styles I like far less so it could also be that. I'd say give it a chance to grow on you and hopefully it will.
As for the world, I thought this story has an interesting world built up. Animal souls and gay pregnancies, secret societies and strength classes - the mangaka obviously put a lot of thought into it. On the flip side, there's a lot for the reader to put to memory so if you're just looking for a light romance, this one probably requires too much thinking! Also, sometimes I felt very confused by where the story was going and just had to read through before I understood what exactly was going on, which seems to be due to the mangaka having such an intricate plot and not quite playing it out as easily as it should've been for an audience who doesn't have all the background knowledge on the story. That's mostly where I deducted points from my rating.
Basically, this is not an easy-to-read BL and don't get into it thinking it will just be the romance of the original protagonist. There are multiple protagonists and love stories throughout, connected mostly through a particular family. If the supernatural elements or world sound interesting to you, by all means consider picking this one up.
Oh, and can I just say
the motif of "See no evil, hear no evil, speak no evil" to define the relationship between 'normal' people and the madararui is ingenious and comical at the same time!
(-8)
(+78)
