The protagonist transmigrates into the body of an egg.
After hatching, he discovers that he has become Kirihara's Guardian Character.
And he looks like a little black-haired demon, complete with devil horns. Well, at least he's cute, right?
But can someone tell him why, as Kirihara's Guardian Character, every regular on the tennis team can see him?
Recently, Kirihara discovered a huge secret.
There's a little fairy by his side who looks a lot like him. And he's the only one who can see it; nobody else in his family can.
The fairy can even help him improve his tennis skills. Kirihara loves tennis, so he is overjoyed, convinced that Santa Claus has given him a personal present.
Thinking that he's the only one who can see the fairy, Kirihara takes the protagonist to school and the tennis club.
But... the moment they walk into the club, someone spots him.
Sanada: "Kirihara! You're late for club practice, and you even brought a plush doll with you! How careless! Double your training!"
Niou: "Puri~ Didn't know Akaya liked dolls. Where'd you get this little guy? He's pretty detailed."
Marui: "Who would've guessed? I never thought Akaya would be into dolls. And you even brought him to school on your shoulder."
Yukimura: "He's so cute, Akaya. Can I take a look?"
Surrounded by everyone, Kirihara and the protagonist freeze in place, afraid to move. Neither of them ever expected anyone else to notice him.
Thesis: People who work hard shouldn't be let down.
