(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...

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.

Ishikawa traveled through the Net King world and became a rookie member of Hyotei Academy.

Thinking of the ferocious moves in the later stages, comparable to fantasy murderous tennis, he felt a lot of pressure.

Fortunately, the tennis mini-game started before traveling loaded successfully, and Ishikawa became the only player in this world.

Gain experience by winning daily tasks and competitions, and upgrade your character to receive skill points and five-dimensional attributes.

Gain favor with a character to gain coaching skills.

Subclasses provide additional talents.

Get the full level of [Kendo] at the beginning, and have a kendo level that surpasses Genichiro Sanada!

Faced with boss-level characters such as Byodoin Phoenix and Polk whose levels are outrageous and marked with [red names], Ishikawa said that he had to master nearly ten sub-jobs, basic skills and advanced skills to the full level.

"As long as you show your level, I can kill even a legendary tennis player for you!"