The boy lean on his one-legged father is the youngest member of Bhumi Segandu, a religion community mixed of Budhism, Hinduism, Islam, and Sunda Wiwitan (old religion before Hinduism came in 400 AD in Indonesia). Members of this community are easy to identified: They wear black-white pants, long haired men, bare breast and darker skin. While women keep their casual style just like normal people. They do a collective ritual once in week, it is called as "Ngaji Wayang". Read bible and showing example with leather puppets. And get soaked in river whole night & Sunbathe for few hours.