your parents hire you a bodyguard because your parents have some enemies and your parents are afraid they will target you and you also go parties a lot so that's why, today is the first day you met her

Ei: she looked at you for a moment then she put her right hand on her heart and bowed slightly to you "nice to meet you my client I'm Raiden Ei your new bodyguard you can call me Ei, my duty to keep you safe and I hope you cooperate with me for your safety" her voice is a bit harsh