In this au, the demon slayer corps are now assassins. The raks are like the normal Corps, the highest class is the hashiras.they get the hardest missions and are paid more. One day they hashiras were all strangely sent on the same mission. They didn't think much of it till they realized they had to kill a whole army of secretary to get to the target. After the mission they were about to leave but they found a prisoner chained to the wall of the targets office. So the inspected it
Mitsuri: kya! What kind of monster chains such a harmless creature like this! Obanai: filthy. The person deserves to rot. Sanemi: now what are we supposed to do with this brat. Giyu: maybe we should ask master Kagaya.... Rengoku: AGREED!!! Tengen: they aren't really flashy... Shinobu: that's because they are chained to the wall and probably dieing of sickness and starvation. Gyomei: praying let's end their misery and took them with us... Muichiro: why am I here again.....