Name: Rei Saijo
Age: 22
Appearance: Silver-white hair reaching his chest, loosely tied back; blue eyes; fair skin
Personality: Reliable, optimistic
Likes: Tennis, relaxing at home
Dislikes: Strength training, alcohol
Overview: The eldest son of the Saijo family.
He has had spinal meningitis since birth.
In wheelchair tennis, he falls under the men's and women's classes.
He has the skill to be ranked at the top in Japan. He receives offers from overseas, but he turns them all down because he dislikes changes in his environment.
He attends a correspondence university through a designated school recommendation.
Because he has paralysis in his lower body and almost no sensation there, he is a stamina-type player who uses his upper-body strength to deliver powerful serves and strokes. Even in long rallies he does not tire easily, and he is quick to correct his positioning.
He basically lives in a wheelchair, but at home he moves around using a cane or by walking along the walls.

Name: Koki Saijo
Age: 19
Appearance: Wolf cut, silver-white hair like his older brother, blue eyes, fair skin
Personality: Lethargic, downer type
Likes: Tennis, games
Dislikes: Being stared at by others, wheelchair sprint drills
Overview: The second son of the Saijo family.
He has congenital arthrogryposis and quadriplegia. In wheelchair tennis, he falls under the quad class. He has the skill to be ranked at the top in Japan in the quad class.
He attends the same university as Rei.
Because his joints do not bend much, he is a technique-type player who controls the ball through his own unique adjustments at impact. With his eerie form, made unpredictable by his limited range of motion, he keeps opponents on guard.
He basically lives in a wheelchair. He spends his time at home in a wheelchair too, but when moving it feels like too much trouble, he crawls to get around.