Would you like to recommend a Doujinshi novel about the Prince of tennis? The main character did not transmigrate but had an older brother. She used to like Tezuka Kunihiro very much and suffered from heart disease at the same time?

The female protagonist's brother and Guoguang were good friends, and Guoguang did not like the female protagonist. The female protagonist was framed, causing Guoguang to hate the female protagonist.

Answer 1

It might not be exactly what you need, but I would recommend a novel that is most relevant to your description of your needs."The Elegant and Pure Lotus of the Net King" is a light novel written by the author, Yi Yixi. It is a doujinshi derivative novel. The general plot of this novel is as follows:

[Closed] She had inexplicably transmigrated to the world of the tennis prince. Was there really a place for her in this space? In her previous life, she actually had a very ordinary but warm family. After coming to a different world, her parents were no longer the parents of her previous life, but they were still so warm. Only her brother was extremely cold. It turned out that she was just the same blood as him.
When she met them, she had no intention of hugging them like some female protagonist who had transmigrated, but she still tied their hearts. She was at a loss, she was at a loss, she wanted to escape, but they wouldn't let her…
Could she be happy? Or could it make everyone happy? She did not know…
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"The Net King: Early Summer" was a light novel written by the author, Mo Xiqian. It was a doujinshi derivative novel. The general plot of this novel was as follows:

She was the child that Mi Yue's family did not want. Mi Yue Xuexi was also Auntie's Little Xia Chu, and Wind's younger sister, Yue Qian Chu Xia.
He was the pride of the Yukimura family, the head of the tennis club of Rikai University, and the son of God in the Japanese tennis world.
They were originally two parallel lines, but they somehow intersected. He realized that he couldn't leave her anymore, and she had already been hurt by him.
When they met again, she had forgotten how to love him. It didn't matter. You just had to stand where you were and let me love you!
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"Dream Chasing Song of the Net King" was a light novel written by the author, Evelynn94. The general plot of the novel was:

[Description: The Japanese team, known as the strongest team in history, has opened the curtain of the era of women's tennis.] Before the match, the original captain Haruka Tsukino withdrew from the competition and transferred to Frost Monarch to live a retirement campus life. Until a secret contract came knocking on his door…
Nets King junior high school students, the new Nets King U17 high school students, and all the members of the World Team appeared!
Women's Internet group, hot-blooded, free-spirited basketball match.
The female lead, Echizen Ryuya, and the other supporting characters had their own love lines.
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"The King of the Nets 'Court Emperor" was a light novel by Boccaccio, a derivative doujinshi novel. The general plot of the novel was:

After transmigrating to the world of the tennis prince and becoming Sanada Kenichiro's older brother, Sanada Shinichiro was a little confused. However, since he was already here, he had to take it as it was. At least this world was not boring. Phoenix of the Institute of Fairness: If I'm the overlord, then he's the natural emperor of the court! Gui Jujiro: The hell he saw was even scarier than what I saw! Sanada Genichiro: "My brother will always be my goal. I can't relax for even a moment. I'll work hard to chase after him!" 'Is it their fortune or misfortune to live in the same era as this guy?'
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"The Net King's Next Life Is With You" was a light novel written by the author for Jun Xi. It was a doujinshi derivative novel. The general plot of the novel was as follows:

What kind of heartwarming story would happen between the elegant and handsome genius youth and the lovely beauty who was as beautiful as jade and snow? Would they have their own troubles? Could they support each other and lead to a better future?
I don't need flowers and moonlight, I just want you to be there in my next life
~ This article is a bg fan of the tennis prince, Fuji Shusuke, for everyone who likes Fuji ~
~ Because I'm a little busy at the moment, each chapter will be very short, so as to speed up the update speed as much as possible. There might be no regular update time, but I'll try my best not to give up ~
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The Strongest Player in Sports was a novel about urban life written by Scholar Tan Tan. The general plot of the novel was:

He was reborn in the world of the Internet King and became the brother of Tezuka Kunihiro. It was still the junior high school age. However, the competition in the country was still fierce, and the people from the Institute of Equality were outstanding. "In this era, I'm the undisputed number one!" Tezuka Shugami looked at him with disdain. He firmly believed that he was the overlord of this era.
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"Net King: I'm Happy to Be Simple" was a light novel written by the author, Nai Kong. The general plot of this novel was:

The original female protagonist doesn't know how to play tennis…It will be very different from the plot…Because I've only watched a few episodes of the animation…There shouldn't be any competitions…Those who are loyal to the original, please click the cross in the upper right corner! This article is mainly about romance…
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The book,"The Internet King's Sentiment", was a light novel by the author suspected to be Yi Jia. It was a doujinshi derivative novel. The general plot of this novel was:

When they first met, she was that cold and aloof girl, but she applied medicine for him when he was injured. Goodbye, she was that gentle little girl, but she was not as good as when she was young! Did she learn how to flirt in China? Looking at the stacks of love letters, the violent atmosphere in the tennis club did not dissipate for a long time. "Lingling Qian Chuan, come over here!" "Hmm?" The girl walked over slowly, her limpid eyes incomparably gentle."Is Jingwu angry?" "I'm not angry!" When the angry youth heard this, he turned around with a cold snort."I won't do something so unglamorous." The girl's eyes curved into a smile as she watched the furious young man turn around and leave. However, as the saying goes, the Heavenly Dao is good at reincarnation. Keigo Atobe raised his eyebrows in satisfaction as he looked at the woman whose face had turned red after being kabedon by him. This was a story of a newbie pretending to be an experienced driver to flirt with each other. Incompetent introduction, incompetent name...
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"The Prince of the Net King's Liked on the Raccoon Cat" was a light novel written by the author, Mo Ranxia. It was a doujinshi derivative novel. The general plot of this novel was:

He was a tennis genius who had won four consecutive championships in the United States and was known as the Prince of tennis. As for her, she was a teenage tennis player, the youngest rising star in the female tennis world. She was well-known in the television and newspapers, but she lost her confidence in a match and was wronged. When he met her, he could only wait to see what kind of sparks would fly. "Oh right, Echizen, your racket.""I gave it to you.""Hmm? What about mine?" "Give it to me."
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"The Net King's Card System" was a light novel written by the author, Ce Hui. The general plot of the novel was:

In this generation of tennis geniuses, Tezuka Kunihiro, Fuji Shusuke, Yukimura Seiichi, Atobe Keigo, Sanada Kenichiro... In this generation of shining stars, an uninvited guest broke in. What kind of light would burst forth in this generation?