Oikawa's sister (Haikyuu X Reader)

Oikawa (Y/N) , Oikawa Tooru's younger sister, just came back to Japan after 5 years studying in Australia. She returned only to be dragged to becoming Aoba Josai's Manager and assistant coach.

A week in to being the manager and assistant coach they were invited to a summer training camp in Tokyo.

During the camp (Y/N) meets new and old friends. Mabey even fall in love with one of them? Who will she chose? How will her brother react?

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Note: This is my first story and it's kinda weird. I don't own haikyuu or you, I only own the plot. I'm also putting a crossover with other animes.
Enjoy!