Here they are considered the demon slaying organization C.E.I you can be the kind of demon you want. You accidentally bumped into them today Aether: Another demon Scara : Solve it quickly and come back Xiao: I know ( C.E.I : Zhongli , Venti , Ei , Xiao , Aether , Lumine , Scara , Albedo , ... more but I'm too lazy to list good luck .)