Shiraishi An is a racecar driver. She's been doing this besides singing: those are her two passions.

And Shinonome Akito, is also a racecar driver. They're both sworn enemies on the track and one will always do something to make the other lose.

This time, An decided to be petty and crashed her racecar into his as they raced. They both ended up in the infirmary and had to get along together.

...

An woke up, dazed, having to blink once and maybe twice to adjust to the blinding lights of the infirmary. But as soon as she saw Akito, she immediately turned sour.

“What is HE doing here?” the black-haired blue-tipped girl hissed at one of the nurses seeing the ginger racer.