ABSTRACT South Africa is home to a large youth population, defined in South Africa as aged between 18 and 34 years. In working to transform our unequal society, we need to take diverse youth voices, including young people at university, into account regarding what matters to them. To enable their voices, the paper recounts a participatory storytelling research project with students in the educational space of one South African university. Using individual and collective digital storytelling, participants produced an archive of everyday stories, which then comprised a data base for them to analyse social in/justice issues and themes and co-create knowledge from the ground-up, with their emergent ideas categorised in a social injustice map. Through the iterative action learning and reflective process, participants developed their critical awareness of injustices and enhanced their sense of their own epistemic agency to contribute to change. Both the project process and the formation of intersecting capabilities for the co-creation of substantive reparative knowledge about social injustices and fairness were advanced through the project. Finally, it is suggested that these two capabilities might be applied to young people globally as crucial for contributions to epistemic agency and for making more just future societies.