Sustained economic interdependence and established diplomatic channels between China and Japan support trader consensus against a direct military clash before 2027, despite persistent friction in the East China Sea. Recent developments include increased Chinese Coast Guard and naval activity near the Senkaku Islands, carrier group drills in the western Pacific, and surveillance during large-scale US-Japan Keen Sword exercises, yet these have stayed within gray-zone operations without kinetic escalation. Bilateral trade delegations, prior summit affirmations of mutually beneficial relations, and planned APEC engagement further reinforce managed competition. The US-Japan security alliance adds deterrence. Realistic scenarios that could alter outcomes include accidental collisions in disputed waters or a Taiwan contingency triggering Japanese collective self-defense responses.