good way to guilt some people into treating their body well if they let their imagination think that the cells in their body are people. People who live good lives if you treat your body in a healthy manner and people who live in hell if you treat your body poorly, like smoking, drinking lots, drugs, eating poorly and a whole lot of other shit i'm sure.
Seems more appropriate for the anime which seems to be more child friendly albeit still bloody to have the males be the white blood cells and the girl be the red blood cell. This version seems lots more gritty, hardcore and darker