When I became a girl, my whole life turned upside down

When I, Nakamura Akira who is formerly a boy that turned into a girl, woke up and saw my younger sister, Nakamura Nao, just laying right on top of me. She is a famous student at school and many admires her for her beauty unlike me who is just your average student with average looks. Though the true personality of hers is that of a spoiled and noisy child demanding anything she wants. Although we got along at first only, it was weird to see her very close to me and snuggling closely. She then opened her eyes and whispered right at me...
"Good morning, my twin big sister"
Big sister? not big brother? also since when did I become your twin?!

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Hello everyone, this is my second story and I am open to any criticism as this will help me learn more. I'll publish maybe at most 3 chapters per week because I have another story to focus on. This story is inspired by another novel called "When I became a girl, an unexpected love quarrel begin" as seen in the first few chapters.
Thank you for reading my story and enjoy~