There Has to Be One Left

Slaying demons is the basic obligation of an upright family, but since you have come to the Demon Palace, you must leave one behind! (＾Ｕ＾)ノ~This fairy, can you cook? The Demon Palace is looking for a cook aunt, with a monthly salary of 3,000! O(∩_∩)O~~The little brother passing by, your swordsmanship is very suitable for sweeping the floor. Do you want to defeat the Demon Lord and be admired by thousands of people?