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In this chapter, the brewing tensions between rival scout agencies reach a breaking point. Key developments include:

The title "Declaration of War" refers to the formal escalation of conflict between the scout agency Burst and its competitors. In this chapter, the brewing tensions between rival

Understanding Shinjuku Swan Chapter 266 Shinjuku Swan (新宿スワン), the gritty Seinen manga by Ken Wakui, reached a pivotal moment in , titled " Declaration of War " (宣戦布告). This chapter is a cornerstone of the series' later arcs, as the protagonist, Tatsuhiko Shiratori, navigates the increasingly dangerous underworld of Kabukicho. Chapter 266: "Declaration of War" Summary This chapter is a cornerstone of the series'

新宿スワン - 和久井健 / 第２６６話 宣戦布告 - コミックDAYS Series Overview

The manga was originally serialized in Weekly Young Magazine and concluded in 2013 with 38 volumes. For those looking to catch up on Chapter 266 or the full series:

This chapter marks the transition into a more aggressive phase of the "Scout Survival" saga, moving away from individual recruitment stories toward large-scale corporate and gang warfare. Series Overview