Byodoin Houou, Tanegashima Shuji, Tezuka Kunimitsu, Atobe Keigo, Rikkai’s Big Three, Echizen Ryoma... This is a golden age of tennis, with stars shining everywhere! What kind of waves will Nishikawa Yu, who unexpectedly arrives in the Prince of Tennis world, stir up in this realm where tennis reigns supreme...?
Well, King of Nets starts with the breathing method. Too similar
Is this the same author as that breathing method? The protagonist of the other book is named Yu Shangshan.