Nanatsu no Bitoku  

The Seven Heavenly Virtues, 일곱개의 미덕, 七つの美徳, 七美德

In the same time frame as sin: nanatsu no taizai, nanatsu no bitoku tells the story of a group of angels from heaven who are searching for a possible "savior" to combat the demonic forces being spread by lucifer and other agents of hell.