This working group explores how restorative justice redefines foundational concepts in criminal law. Moving beyond restorative programmes, it aims to examine restorative justice as a legal-philosophical perspective that challenges traditional thinking on core criminal justice elements such as views on punishment, responsibility, and the role of victims. The goal is understanding how restorative thinking can reshape legal principles and contribute to more just, participatory, and human-centered criminal justice systems. The focus is both conceptual and practical, seeking integration of restorative principles within existing legal frameworks. To rethink the key concepts and institutes of criminal law from the restorative perspective: How will the current criminal law philosophy, theory and legislation change if we would rethink them from restorative point of view using restorative principles and values?