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Quatre convinces Heero to stay in the Sanc Kingdom to defend Relena. Later, when OZ attacks a Treize Faction unit hiding in the Sanc Kingdom as an excuse to invade the pacifist nation, Heero's Wing Gundam leads a counterattack and (once again) saves Relena's life in the process. Although she advocates pacifism, Relena allows Heero and Noin to form a small defense force of mobile suits to defend the country.