Tsukimitsu Ochi reached the Nationals while attending Hyoutei Gakuen. He has a taciturn cool personality, but he secretly carries with him the feelings of his comrades.

Source: Prince of Tennis Wiki

Sequel to Shin Tennis no Ouji-sama OVA vs. Genius 10. 
Middle school students fought fiercely against one another in a national tournament. Now, 50 chosen representatives return to fight again as high school students! 

The stage is the U-17 (Under Seventeen) Japanese Representative Training Camp. Middle school students have been invited for the first time to a camp known to produce the best Japanese tennis players. National champions from Seigaku, Hyotei, Rikkai, Shitenhoji... With all the rivals from the national tournament attending, everyone eagerly awaits their reunion. 

 At first, the middle schoolers do not expect much from their high school opponents. However, the training camp is not so easy! Athletes with skills incomparable to those they previously faced and their mysterious coach appear before them. Faced with numerous demanding challenges, can the middle schoolers survive in this meritocratic training camp? The new chapter of "Prince of Tennis" begins here! The curtain rises on a new stage-- 
(Source: Crunchyroll)

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The story of the OVA series tells the continuation of the 13-episode TV anime in 2012, setting in the Japanese U-17 (under 17) High School Representatives Selection Camp.

In Japan an "All Star Team" is being formed, containing the 50 best tennis players from the entire country.

The sequel to Shin Tennis no Ouji-sama: U-17 WORLD CUP. 

Things heat up on the tennis court as Ryoma gets ready for the semifinals! 

(Source: Crunchyroll News)