Is Sangwoo trying to pin that murder on Yoonbum cause the apple and pushing him onto her makes me think he is.
Holy sht. Now that u said it, it kinda looks like that. And when sangwoo has convinced Bum that he murdered them himself, the cops would question him and because he loves sangwoo and he was already brainwashed, he would admit it.
I just want an ending where Hanabi is grown up and she's happy even if she's not with someone as long as she is happy. That's all I wanted to see.