From what little there is, I got that the main character was having a romantic dream. As she was kissing the stranger in her dream, she woke up to see someone in her bed and kissing her. There is really not much more to this... ╥﹏╥
I'm guessing nana has her own ability and is tricking girls to collect sticks for her for power. I'd hate her...but she got rid of that mean serina so I can't hate her.(〜 ̄△ ̄)〜
Two girls who used to date have one last talk after one of them moves away. It's bittersweet.