The Witch's Mistake

Jisoo the witch, chanted a spell but it turned out to be real. Now she has accidentally summoned the demons of the 7 deadly sins. Will she cower back in fear and leave the world to suffer on its own or go out of her way to fix her mistake? "Kang Jisoo, 18 years old, Amateur Caster, Demian University student and a High School Junior, am I right?" "W-what? W-who are you?" "Saeron, 108th angel of the 21st division, I have come to deliver a message to you from the Dominions. "