I get a little surprised every time I see a comment about being disappointed or sad that there probably won't be a happy ending to the main pair's relationship. Like... Airi strangled Hina whilst holding her out a second story window back in Chapter 5. The series is founded on them having a very unhealthy, codependent relationship. Things have obviously gotten even worse, but it was never close to a normal romantic relationship. If the rape in the previous chapter didn't convince some people that these two will never have a happy, healthy relationship, I don't know what would.