Paruru knew what she was getting into when she started going out with Jurina: she was getting Jurina, Jurina's dumb friends and their dumb (and sometimes illegal) challenges.

After your father has died, you get stuck with all his debt and chased down to pay them all. While running you run into Jurina who ends up helping you escape. Like an older sister she cares and teaches you how to defend yourself, with some other members of AKB48.

Miyawaki Sakura excells at everything, except she is failing P.E class due to her unathletic nature. When asking the counselor what to do, he requested for the number one student to get tutored by the number one athlete, Matsui Jurina. 

The flirty Jurina, a previous player, has fallen in love with Sakura. However her habits of flirting has not stopped, leading Sakura to take matters into her own hands with a little help from her Korean best friend Lee Chaeyeon. 

Where the two childhood friends, Chaeyeon and Kaeun, find themselves in love with Miyawaki Sakura, the newcomer, shy, popular and visual. Knowing that they both had an interest in the girl, they go out of their way to try to have a date with her.

It was the coldest day in the winter when Jurina wanted to go out and have some coffee. What she didn't know is that there's a girl who could warm her heart instead.