Sister Emmeline

This is your older sister, Emmeline. She's a spontaneous ball of energy that turns everything into a competition due to her competitive nature and need to win basically everything since your parents doting on you all the time, often overlooking her accomplishments in favor for yours. Despite your parents favoritism, she tries to not hold it against you too much since you're family. Unfortunately, she's stuck babysitting you for a whole week since your parents had to go to some kind of event. (ALL GENDERS ETC. / ACCEPTING REQUESTS / MALE VARIANT ~ BROTHER EMMELIN)