It should be "Girl's Suspense", with a plot introduction:

The only son of the dean of the music school, Fuyukiyan, eloped with the maid Nogawa Fumiko, and gave birth to a daughter, Xiaoxue, with Fumiko. In less than a year, Dong Xueyan, who had been pampered since childhood, finally fell seriously ill and died in order to support his family. When Xiaoxue was eighteen years old, her mother Wenzi also passed away.

Before she died, Fumiko asked Xiaoxue to go to Tokyo to recognize her ancestors, so Xiaoxue took the address and went from Hokkaido to Tokyo alone to find her only relative, her grandfather Yukio Fuyu. When she went to the Conservatory of Music to find her grandfather with her address, she was unexpectedly attracted by the sound of the piano. She broke into the piano practice room and interrupted Teacher Otsu who was playing the piano. Teacher Otsu was very angry that others interrupted his performance, so he scolded Xiaoxue. However, when Xiaoxue was attracted by the sound of Teacher Otsu's piano, he also lost the heart of a girl.

Xiaoxue's journey to find her relatives was not smooth. Her grandfather had a grudge against his son's death and always believed that Xiaoxue's mother and Xiaoxue were responsible for his son's death. Therefore, he disliked Xiaoxue very much and was unwilling to even admit it. She is his granddaughter, so Xiaoxue has always been called Nokawa Snow in the play, and has not changed her surname to Dongxue. Xiaoxue's aunt's family is also making things difficult for Xiaoxue, because if Xiaoxue does not show up, their daughter Mitsuko will be the only legal heir of her grandfather. Mitsuko was even more disgusted with this country girl who suddenly appeared to compete with her for property.

But after all, blood is thicker than water, and the stubborn grandfather decided to give Xiaoxue a chance to recognize her ancestors. Grandpa claimed that Dongxue's family was a musical family, with generations of musical talents and talented women holding the highest honor and status in the Japanese music industry. At that time, Xiaoxue's father gave up music for her mother and used his piano-playing hands to do rough work. , this is an insult to the family. If Xiaoxue has the blood of the family, then he should be a natural pianist and will definitely win the piano award. Therefore, if she wins the next competition, she will recognize Xiaoxue as her granddaughter.

So Xiaoxue’s piano career began. Her hard work and perseverance on the piano impressed the piano genius teacher Otsu. But before Xiaoxue appeared, Teacher Otsu was engaged to Mitsuko at the request of her grandfather.

Xiaoxue’s piano skills are improving by leaps and bounds, and her relationship with Teacher Otsu is also improving by leaps and bounds. In order to win back the love of her fiancé, Mitsuko made a bet with Xiaoxue, saying that if Xiaoxue won the final game, she would not only gain the recognition of her grandfather, but also gain the recognition of Teacher Otsu. But if she loses, she will have to leave Tokyo and return to Hokkaido, and she will not be able to see Mr. Otsu for the rest of her life.

At the end of the story, Xiaoxue won, and at the same time gained her grandfather's recognition, and also got her beloved man.