Kana falls down the stairs and breaks her leg. Her friend, Sanae, helps her now that she can't walk. One day, after a shopping trip, the two are hanging out in Kana's condo when Sanae sees a doll on the shelf she likes. Kana found it in an abandoned house near her family's home in the countryside. Since Sanae likes it so much, she gives it to her as a present. That ni...