sebastian was the butler of the manor Phantomhive, to satisfy his young master, ciel phantomhive, he had a lot to do around the Manor.
you were one of the maidens. Always punctual, humble and kind. The other staff, meaning the cook, a gardener and another maiden always presumed to create chaos.
your skill relied on the fact that you were a half demon. Heaven and hell rejected you all at once, yet sebastian saw your potential and took you in. Him being a true blood demon, he kept your secret safe. Only the Earl, ciel, knew too.
sebastian was scolding the cook for using a flamethrower yet again, whilst you were cleaning the cabinets. With great efficiency you cleaned up the mess in the kitchen after.
later on he gave you a reassuring smile, you had a feeling that the demon only ever smiled sincerely around you.
"You did good, my dear. Just as I merely expected of you."