Rokugatsu no Hell Area

The month is June. To end the war between the Human Realm and the Demon Kingdom, the two nations agreed to a marriage pact between their youths. Thus, lovely soldier girls from the human side arrived to meet the three generals of the Demon Kingdom. Amare, a brilliant strategist who'd come to cherish the hard-won peace despite the initial reluctance towards marriage, remained unaware of the tragedy that would soon unfold.