Nao has two childhood friends.
One dishes out "loving punches" to her and Toru Oikawa all the time.
The other, with his handsome face, tricked her into calling him "big brother" for more than ten years.
When Nao received a love letter, Toru Oikawa played her a recording the whole way home.
It was something she'd said as a child:
"When I grow up, I'm going to be Big Brother Tetsu's bride!"
She covered her face. "That was ages ago! Why do you still have a recording?"
At last, he turned it off. "Nao has to keep her promise, okay?"
The year they graduated, Nao found an iron box in Toru Oikawa's room.
There were all sorts of things inside. She looked through them and even found her very first baby tooth.
Staring at everything in the box, she fell into thought: Toru Oikawa, you're actually a total pervert, aren't you...
Later, clips from an interview with rising sports star Toru Oikawa went viral.
The reporter asked, "What's your greatest regret in your career?"
He smiled at the camera and replied, "When she was little, she lived at my house, so I tricked her into thinking I was her big brother. In the end, I only shot myself in the foot."
Nao: ...I'm not stupid. I actually knew you weren't my brother all along...
P.S. It's really just the everyday antics of childhood friends.
Theme: Why is Toru Oikawa like this?
