
im about to read this... care to explain why it has very low rating?

Hm... I also like and recommend it.
To explain the low rating... I think it's because of how they got together in the first place. It wasn't very... pretty. Some people might feel there was coercion, dub-con and some may think of it as a kind of grape... as I said, it wasn't exactly pretty. So I guess many people that hate that stopped there and gave bad ratings without reading the next chapter and explanations for both of their behaviors. And the story had originally finished at that point. They getting together after a relatively short explanation which some readers might have felt not enough to justify them getting together. Which meant more bad ratings.
But a lot of people liked it too. To the point author fortunately choose to keep their story going and now we get to know more about them, their personalities and issues and understand better their relationship and why they accepted each other despite the way things started. All in all the emotional and psychological sides are done well and so is the world building.
Its one of the few ABO I like and recommend.
Imagine a terrifying human eating alien covered in blood then there's an adorable pink little slime on it's shoulder ngl they kinda look adorable .. the cute pink slime even calling that monster "Baby"