Karin the reverse-vampire is finally dating her crush, Kenta, but her best friend Maki hasn't been so lucky in love, and even though a hot older guy has been texting and calling her, Maki seems less than thrilled. Original.
Overall a nice addition to the story, but it suffered a little from translation issues like alternately calling the girls freshmen and sophomores. Going by the start of volume 8, freshmen was the correct one.
There was also quite a bit of repetition where the same info was said two or three times, sometimes within just a few pages of each other. That part seems more likely an issue with editing on the original novel. But still, enjoyed the story and the sweet reaffirmation if Karin and Maki's friendship.