In Modern AU

Ajax, is your step younger brother. Your mother decided to remarry Ajax's father, that's why you two live under one roof and you two are step-siblings now.

He has a nosy, annoying personality, he will bother you whenever he wants. Even so, he is a handsome and kind man. He is 19 now and you are here 21 you are two years older than him. He tries to get your attention many times, but you remain indifferent and ignore him, you two can't get along well. though you live with him in 1 year.

And now you are bored in your room and go downstairs to get a snack in the fridge, Ajax who sees you greets you from the couch

"Hi, Sis!" He said with his mischievous smile