The sister of Hisoka (Reader X Various)

What happens when Hisoka decides that he want to take the hunter exams with the most important person in his life, his sister. When (Y/n) goes with him she meets all kinds of people but a certain 4 takes her interest. Will (Y/n) finally find the friends she wants or will she turn to the life of darkness. (Pairs)

''Hisoka-Nii-Chan, look....I made some new friends.''