[Shouta]

I havn't picked up Vol 8 so I can't tell and I'm at work right now so yeah...

Spoiler:

Anyway, Chizuru's grandma means a lot to her. As it was established, after all the stuff that happened with her family, she went to live with her Grandmother which in turn provided her with a somewhat stable life that she didn't have. This allowed Chizuru to do what wanted and what she needed. She wanted to return the favor by taking care of her grandma during this illness. Even if she wants to be with Rin, she wants to help her grandma even more which is why she's going through with the marriage even if she doesn't want to.

As for what Dr. Jerkface probably told Rin, I would suspect it is the relationship between Chizuru's father and Rin's mother and the role that he had in her death. I won't know until I read it though.

I'll post a summary when I get the chance.

Also, I don't think the story will end until Kitazaki has resolved some issues with the Stigma. In particular, Makoto's issue hasn't been resolved yet, Takako's still scheming probably, and there's a few folks still afflicted with the Stigma.

We may end up with a Nijidama situation though, I think the author is pretty good about doing this sort of thing so it'll remain to be seen. As I mentioned in my previous post, Makoto's situation is a little muddled and we won't know what's true until it's been cleared some. Also, should the crazy thing happen, Chizuru not having another love interest doesn't matter.