The information of the characters in the online novel can be referred to the following example: 1 Remy-The protagonist is a young man who loves tennis and once represented Japan in the Olympic Games. He is a genius in the tennis world. 2. Takitsubo Oshii-Shusuke Fuji's father was a legendary figure in the tennis world and a famous coach. Neji Yuy-Ryoma's good friend and a talented tennis player who won the World Junior Championship. 4. Kyujinjin Noh-Hideki Oishi's opponent was also a talented player who had won the Japanese Junior Championships many times. 5 Sakuki Yuy-Shusuke Fujiwara's classmate was also a talented player who won the Japanese Junior Championship. 6 Director (Director Sanada Kenichiro) -The head coach of the Japanese national team is also a legendary figure in the tennis world. He has won many international competitions. These are just some examples. There are many other characters and backgrounds that can help readers better understand the story and character.