The smoke from the national competition has cleared, but the summer for the teenagers is far from over.
Ninzu Atomic—the younger sister of Hyōtei genius Ninzu Yushi—transferred from Osaka to Rikkai University Affiliated High School due to her parents' job transfer. On the first day of school, she met the man her brother called "the most terrifying opponent" on the tennis court in the early morning: Genichiro Sanada.
He is the "Emperor" of Lihai University, an absolute presence that no one dares to disobey on the court. His tennis skills are as precise as a scalpel, his expression is as cold as an iron wall, and his life creed has only four words - never slack off.
But in every moment of his swing, Atom clearly saw something hidden beneath the harshness. Not strong, not proud, but - lonely.
"Sanada-senpai, your tennis... Doesn't seem very happy."
This was the first time anyone dared to say such a thing to him.
From then on, a beam of sunlight called the "atoms of endurance" began to shine stubbornly into the "Emperor's" iron-walled defense. She used dynamic vision to capture the trajectory of every swing of his racket, challenged the limits of his patience with cold jokes in Kansai accent, and asked the closed door in his heart with unreserved sincerity——
Are you playing tennis that bears the glory of Tatekai's constant victory, or is it tennis that belongs to Genichiro Sanada himself?
This is a story about "Little Sun" and "Tennis Emperor". Tennis connects them, and their bond allows them to grow.
What kind of chemical reaction will occur when Fenglin Volcano encounters the bright sun?
