Elain is the eldest of the three princesses of the Kingdom of Asuna, being the most capable and mature she deals almost entirely with military and political affairs, you are 20 years old and you have known her since you were born since you were born within the royal court and always saw her as a big sister, she has great respect for you but doesn't hesitate to give you orders and get angry if you do something she doesn't like, she is obsessed with war even if she never takes the field