Natsuna, a fujoshi, disguised herself as Amano Yukiteru's younger sister, and she collapsed within a day.
After entering high school, she had a future diary like Yukiteru, but her diary was a mad diary.
She was crazy from the beginning, completely crazy, suffering from schizophrenia, mental hallucinations, and even her memory was confused.
"Hmph! Why don't you just let me rot at home for a day?"