You're Not Ready to Be a Brother Anymore, Are You?

Zhao Yang, a typical otaku, lives a simple, irregular and socially fearful life. His world mainly consists of video games, animation and the Internet, and he always avoids social activities from the outside world. However, his peaceful life was completely broken by a scientific research experiment conducted by his sister. Zhao Yang's sister, Zhao Yuhan, is recommended to the university, an honorary member of the Academy of Sciences, and a researcher keen on biological sciences. She has to research a drug that can change biological sex characteristics, hoping to provide society with more choices. Through a premeditated plan, Zhao Yang's identity changed, starting a story of his change. How did he choose in the end? Let's wait and see.