What? There's Echizen Nanjiro here... I want to play tennis, I want to play with skills that make people cheer, to hit super-powerful tennis balls that make a continuous "boom," and to smash a wall with one shot? I can do that too!

[No system + the male protagonist has the strongest talent + the male protagonist is extremely popular + the male protagonist is the most handsome! No CP! ]

After traveling to the world of Prince of Tennis, he joined Seigaku at the request of his teacher Nanjiro Echizen.

Unexpectedly, just when he helped Qingxue get on the right track, he was kicked out of Qingxue by Coach Ryuuzaki Sumire due to a disagreement.

Matsuoka Rin: "Okay, that's perfect. I can't stay in this Seigaku anymore!"

After leaving Seigaku, Matsuoka Rin turned to join Hyotei and became Hyotei's vice-president, leading Hyotei to win the national championship...

And this is just the beginning!

……

Ryuzaki Sumire didn't expect that she missed the chance to win three consecutive championships just by kicking out one player, which made her regretful.

But none of this compared to how she felt when she ran into Nanjiro and Matsuoka Rin standing together and learned the truth. She collapsed immediately.

Ryuzaki Sumire: "He should have been the second legend of Seigaku. He was Nanjiro's disciple..."

Kunimitsu Tezuka: "If it weren't for him, my tennis career might have ended early..."

Echizen Ryuga: "My only rival! And also my best friend!"

Byodoin Phoenix: "I thought he would be my successor... but he's actually my rival!"

Mifune Nyudo: "He is the true legend of tennis, the true perfection, the God of Tennis!"

Echizen Nanjiro: "My only disciple, and also my only future rival. It's a pity that Seigaku missed him..."

Countless people follow him, countless people admire him, and countless people regard him as their only rival!

PS: Prince of Tennis fanfiction, not Free fanfiction, not Free Rin

(There is no female protagonist in this article!)

Takahashi Hikoichi travels to the world of Prince of Tennis, joins Rikkai University at the beginning, awakens the idle system, and becomes stronger just by lying down.

"After a day of idle time, my tennis skills have become roughly proficient and I am now at the regional level."

"After a week of playing, my tennis skills have been perfected and I have reached the Kanto level."

"After a month of playing, my tennis skills have reached perfection and I am now a national-level player."

……

"After a year of playing, my tennis skills have reached the pinnacle. I have realized the unity of man and nature, created my own magic skills, and have world-class strength."

While others are training, he lies down!

I thought he was just a loser, but I didn't expect his strength to increase instead of decrease.

Everyone was shocked!

He became a legend at Rikkai University and reached the pinnacle of the tennis world...

A time traveler travels back in time and becomes the Fourth Hokage Minato Namikaze, who was reincarnated by Orochimaru.

Sarutobi Hiruzen: Minato, why have you become so cruel? You are no longer the gentle and kind Minato I knew.

Orochimaru: Why is his power so strong? What kind of power is this?

Minato, to thank you for taking care of Naruto for so many years, I will send you to hell!

"Even Ryuzaki Sumire can be a coach! Why can't I be one?!" "Self-study? What's so difficult about that? Besides, I'm a master at making motivational speeches!" Makihara Keiji, wearing an apron, said. ...

Accidentally traveling to the world of the comic version of Prince of Tennis caused a change in the world line.

The champion Rikkai University completed an unprecedented three consecutive national championships.

Kunimitsu Tezuka did not let injury ruin his three-year tennis career.

Echizen Ryoma has completely turned evil, and he firmly believes in staying in the American team and waiting for an opportunity to avenge Byodoin Phoenix.

...

The person who triggered this butterfly effect was a Quincy who escaped the large-scale [Sacred] punishment when Yhwach awakened and fled here.

Every time I watch Slam Dunk, I see a guy who hasn't played for two years, but can still burst into amazing performances against top teams like Shoyo and Sanno, pulling the team out of the abyss time and time again.

At that time, I always wondered how strong Mitsui would be if it didn’t have a two-year gap?

And now, a basketball enthusiast from later generations travels to the world of Slam Dunk and becomes Mitsui Hisashi. What kind of achievements will he achieve without the two-year blank period?

Traveled to the Prince of Tennis and became a member of the Hyotei tennis club.

The competition is about to start... I feel so weak and frail, what should I do?

Miyashita Rin suddenly discovered that as long as she took care of her health, she could continuously improve her strength!

Strength, speed, skill, mental strength...

Make up for it!

Essence, Qi, Spirit… Mind, Eye, Manas, Alaya…

Make up for it!

The supreme realm, the dimensional world?

Make up for it!

Suddenly looking back, Miyashita Rin was about to take care of herself, take a walk with Big Bear, drink some more tea and lie down, but she found that she had already stood on top of the world...

Levels: Cannon Fodder, Regional, Metropolitan Competition, Kanto, National, World (Physical, Mental), Ultimate (Three Paths Ultimate)

ps: I really don’t know how to write an introduction, please move to the main text~

A former key server for a university volleyball team accidentally travels to the world of Haikyuu Shonen and restarts his life. This time, he is no longer willing to be that unknown key server. He becomes the team's ace, the absolute main force in the hearts of his teammates, and leads his teammates from Karasuno to dominate the country!!!