Master, Please Stay.

The human world is prosperous. Although there are wars in some areas of the world, for most people, the world is peaceful. However, in unknown corners, there is a group of people who continue to make sacrifices in order to maintain the civilization of the world. They are called "Valkyrie". When the desperate beasts born in the abyss appear, they will descend from the nine heavens with guns and swords, cutting off everything... But it's not so serious here. Here are some stories about the daily joy of the Valkyrie after the battle. What, who do you think I am? I am a cleaner doing the splits, and the Valkyries affectionately call me "Master"