This introductory chapter provides an overview, main objectives, key arguments and the significance of the study. This book is a result of collective efforts by those who are interested in advancing the discourse on hybrid peacebuilding in Asia in two aspects. First, by drawing on a diverse array of relevant theoretical perspectives gained from the discussion on complexity, identity and feminism, it aims to operationalise hybrid peacebuilding theory from various perspectives of Asia, which was designed to serve as a descriptive lens to elucidate the dynamic and interactive nature of the process of hybridisation. This attempt is concurrently administered by a critical effort to refine the typology of the ‘local mid-space gatekeepers’ proposed in Hybrid Peacebuilding in Asia (Uesugi 2020). Second, by investing empirically the mechanism of hybridisation in the peacebuilding process in Cambodia and Mindanao, it seeks to demonstrate, without falling into the pitfalls of binary, how mid-space actors in these settings served or failed to serve as bridges to close cleavages in the conflict-affected society. These in-depth empirical findings are complemented by another set of case studies which focuses on two leading peacebuilding actors in Asia, China and Japan, to illustrate the need to expand the horizons of the research on hybrid peacebuilding to include the impact of non-Western approaches on the practice of peacebuilding.