Karin is childhood friends with two brothers named Sakumi and Takumi, and she has a crush on Sakumi
She finds out that Sakumi has a crush in university, and she vows to make him look at her instead
And even though he is always bantering with Karin, the other brother, Takumi, actually likes her
Karin and her neighbors Sakumi and Tatsumi (brothers) have known each other forever and are best friends. When Sakumi returns home from college, Karin couldn't be happier, however she can tell he has changed, andhas become more mature. He feels farther away from her, which upsets her because she has a huge crush on him. Meanwhile, Tatsumi, who is in the same grade as Karin has feelings for her. Sakumi, after returning home from college, realizes how much he missed Karin, and begins to see how special she is. Karin, Tatsumi, and Sakumi form a love triangle...