Oh my gosh, the first episode of the anime came out today, and I'm currently watching it. It's so freaking good, the animation is smooth and they didn't change anything from the manga I'm so happy
I saw what happens next in the raws, I'm not ready SPOILERS
I can't tell anyone where I read it because I sadly lost the name of the website, but he kind of goes crazy and bites her and sucks her blood, to the point of her passing out and he eventually comes back to his senses and takes her to the others for help
Oh my gosh, I'm actually crying and about to start sobbing, I was totally expecting them to find a way at the last second