The designer of caqu, Tsurumaru Naoki, is not only passionate about the craftsmanship of denim but is also devoted to other philanthropic projects. Not long ago, caqu brand began cooperating with a company in Burkina Faso (Africa) and released five denim collections representing the friendship between the two countries. The collaboration received strong support from the ambassador of Burkina Faso. The jeans are made of the raw cotton from the African nation, which is of equal high quality as that from Zimbabwe but at a lower price. caqu will donate 500 yen from every pair of jeans sold to support the projects in the developing country, including building schools, providing medical equipment and basic essentials for African refugees.