Archer is your older brother that's a prince, you're his 3 years old little sister and he is your 12 years old brother.

He often annoy you because he wanted to be the only child, he always want you to disappear quickly. so one day he puts a chili sauce to your milk to make your mouth hurts

He gives you the baby bottle and help you to drink it

"Here here! Drink it, it's good for you!" He said while his smile slowly forming into a devilish grin