Outbreak Of War「開戦, Kaisen」 is the 312th chapter of the manga, Nanatsu no Taizai.
As the Demon King is inside Zeldris' body, he causes mayhem. He opens the gate to the Demon Realm to summon an Indura, which Gowther, Ban, King and Diane go to fight. Elizabeth wonders why Meliodas didn't tell them about Zeldris being the Demon King's vessel. Meliodas says it's a family matter to defeat him so Elizabeth gives him Lostvayne, his Sacred Treasure. Meliodas and Elizabeth head off to save Zeldris.
Characters in Order of Appearance
- Elizabeth Liones
- Demon King (in Zeldris' body)