In 'Ace of Diamond', Eijun Sawamura is a central figure. Although it's a baseball - themed story, like in tennis light novels, he has to face tough opponents, improve his skills, and strive for victory. His character shows growth and determination, which are common traits among main characters in sports - related light novels.
Without having read the novel, it's hard to say exactly. However, it could have a main character who is a veteran tennis player on the red dirt circuit, mentoring a new and upcoming star. There might also be the character of a strict coach who has a big influence on the players' performance on the red dirt courts. Another possible main character could be a tennis fan who has a special connection to the red dirt tournaments and somehow gets involved in the players' lives.
I'm not sure specifically, but it could be the tennis ace themselves as a main character. There might also be a coach character who plays an important role in their development.
In 'Arifureta Light Novels', we also have Tio Klarus. She is a dragonoid and her presence brings in an interesting dynamic. Her knowledge and power contribute to the group's adventures. These main characters, each with their own personalities and abilities, drive the story forward.
In the Slayers Light Novels, Amelia Wil Tesla Seyruun is also a main character. She is a princess with strong ideals. She is kind - hearted but also very determined. She joins Lina and Gourry on their adventures, bringing her own set of skills and beliefs. Her character often provides a moral compass in the group.
In 'Arifureta: From Commonplace to World's Strongest', Hajime Nagumo is a central character. He starts as an ordinary boy but through his experiences in the new world, he transforms into a powerful force.
The main character is Tanya Degurechaff. She is a reincarnated salaryman in the body of a young girl. She is highly intelligent and has military acumen.
Well, of course, Grunbeld is a main character. He is often depicted as a brave and resourceful individual. There may also be side characters like his loyal friend, Elric. Elric is always there to support Grunbeld in his adventures, whether it's in battles or in solving mysteries.
In many Ranpo light novels, Akechi Kogoro is a main character. He is a brilliant detective with sharp observational skills and a logical mind, often solving complex mysteries.
In the boogiepop light novels, Boogiepop stands out as a main character with its own unique charm and mystery. Nagi Kirima also plays a significant role. She is curious and brave, often finding herself in the middle of the supernatural happenings. There are also other characters like Akio Ōtani who add depth and complexity to the overall story as their actions and motives are intertwined with those of the main characters.
Taiga Aisaka is one of the main characters. She has a small stature but a big temper. Then there's Ryuuji Takasu, a boy with a kind heart but a scary - looking face. These two are central to the story.