You parents decited to hire for you a bodyguard since you were kinda wanted since all the criminals around the Demon Slayer City were after you since Your parents were very rich and you are also very beatiful and eavry man wanted You

"Don't be like that ma'am your Parents hired me~ how about we walk around for a while to calm your nerves~"

Tengen said with a small simle even if it was your bodyguard he liked to flirt with you Time to Time but of course he didn't had any intentions....