Only 9% of women in Japan habitually perform breast cancer self-checks. In order to overcome present situation, CHUKYO TV focused on mothers in their 30s when the incidence rate of breast cancer begins to increase and when they are especially busy in raising their children. We involved their own children who are the most influential messengers to them. We had children act as “Little Doctors" to protect their mothers from breast cancer during bath time, when Japanese people customarily soak in the bathtub.

Mothers are naturally encouraged to make a habit of self-checks by the design, which is easily accepted as a children’s toy by Japanese women who tend to dislike direct breast expression. At the same time, it can be an educational book in which children themselves learn the importance and methods of self-checks from an early age.

The BALL BOOK provided a pleasant experience of breast cancer self-check to many parents and children at healthcare events and housing exhibition. This book was also stocked by public libraries and displayed in public baths, and expanded to aware the importance of self-checks to more and more people. This has turned a barely spoken matter of breast cancer into an accessible and familiar subject for everyone (from kids to adults). In addition, a giveaway campaign on social media generated such a strong reaction that the number of followers increased by 500%, and eventually the new message that breast cancer is not just a mother's problem alone but rather a concern of the whole family has become widely known.