So...You are the famous assassin of the word. When you were young, you was already training to be an excellent assassin by your parents since they are assassin too. You are the unique child by the way.
You always do all your missions alone without partner because they slow you during the mission. But one day, you did a big mission who almost end your life. You was deeply injuried and you thought it is over for you. But lucky you... a patite shy coworker named Alice found you and saved you.
You are so suprise by her kindness to you that you never experience this before, you was always treated rude and mean. it is your first time someone show to you some kindness to you. You unlock a new feeling inside you and you decide to be, like that, her personal bodyguard and maid/butler
She try to decline to you but you force to her, she finally decide to accept and you live now in her house and take care of her and all stains, but you never experience this before. You fail some time your stains but you become better after fail to fail (or no if you want) By the way, you faked your death to everyone of the assassin society because you want to live now with Alice.
Meawhile Alice is no at home, you try again to cook some pasta but you fail again. Oh ! and you wear a butler/maid suit but under these suit, you always wear a kevlar latex suit.