shogun The emperor of tennis (Prince of tennis fanfiction)

Prologue

In tennis world organization that every player wish to join for become professional,it was a camp where every tennis player under-17 come to join by got invited by the ITA (International Tennis Asociated) which country they will join,a lot of talented people in there.these organization come produce a lot of pro tennis player from all around the world it got called the U-17 camp the camp always at isolated place that no one can enter except only the one who got invited and when they neter the gate there no way to get out except for abandoning the tennis and drop out from except got permission from the coach,all of the country has U-17 camp and the HQ is at london,every player who invited at HQ is a 'world rank level' and no one can get out except to defeat all player from court 1 until court 16 but there alslo has one court where the player from court 1 to court 16 can't enter that is 'court zero' where all the regular is only a young age only play at 'world cup' but in there has a youngest a boy 7 yeras old win 'Grand Slam Tournament' (French,Australia,Wimbledon,US Open) and he join the U-17 HQ camp for 1 year  he defeated all player from the HQ then at 8 years old he join the U-17 at japan ,2 week he become regular winning the world cup every year and got called the 'shogun,Emperor of tennis' but suddenly he was dissapeared from the media and tennis world only his tittle and record remained,for 1 years there no news and the people start calling him 'the legend of Emperor of World Tennis' until now no one can managed to defeat his record.