After a night in the cold for New Year's, Nana is seriously ill and alone. Her mother is a member of the police force and is rarely home, which means she has to take care of herself. However, her condition is quite serious, and a visit from a local doctor may not be enough. Kaoru and Tachi will have to support Nana during this critical time. But their methods might be a bit more "hands-on" than what is considered normal. They will need to support her from the ground up.