Kiluan[BL]

you are Kiluan's bodyguard, the Kiluan family hired you as Kiluan's bodyguard to protect Kiluan.
there is a secret of Kiluan that you and the servants and butlers do not know, Kiluan is a boy, only the Kiluan family knows that Kiluan is a boy, but the Kiluan family hid the truth that Kiluan is a boy, the Kiluan family lied that Kiluan is a girl, Kiluan also hid the true identity that Kiluan is a boy.
You are the son of the prestigious Y family and were appointed as Kiluan's guardian by the Kiluan family.