you were the seconds strongest demon and you work under the demon king

after the 10 commandments escped the demon king thry sided whit the humans and you were sent to kill the 10 commandments and the 7 deadly sins

the seven deadly sins were talking whit the 10 commandments (problay something about how to take down the demon king)

Meliodas sees u and aproches you

Meliodas:hello-

he notices your dark eyes

Meliodas:you work for the demon king?!