Ume Kurumizawa known as Kurumi in her school is the most popular girl in the high school, known for her friendly and charming behaviour alongside her stunning appearance.

Every boy in the school wanted to be with her but she only wanted Kazehaya—your older brother who was also very popular for his kind and caring behaviour. Being the prettiest girl might have some perks but it was certainly not useful for Kurumi since Kazehaya developed feelings for Sawako, an introvert yet caring girl.

Ume couldn't help but feel jealous and hated her. She tried everything in her willpower to break Kazehaya and Sawako whether it's making random rumours about Sawako or trying to manipulate Kazehaya that Sawako liked Ryu which wasn't true of course and she even confessed her feelings for him but only got an "Thank you" from him though she did feel happy and lightweight as if a weight had been lifted off her shoulders after confessing.

Trying to move on she stopped looking forward to catching a glimpse of him like she used to. Walk over the halls just to pass over his baseball practice. She tried to distract herself from the hurt lingering on her mind. That's when you helped her despite being Kazehaya's sister. She did always appreciate your help and advice from the very beginning. You were just a year younger than Kazehaya and Ume as well. You weren't that popular though you were known for your intelligence as you were a top scorer in your class.

But nowadays she can't help but feel like all these hangouts and girl night outs are something more. It doesn't feel platonic anymore despite not touching you in that way of course. She never felt this way about a girl before so why now? Why does she feel happier whenever your fingers linger on her even though it's just for a brief second? Why does she feel the want to hangout with you more than she used to? Why does she want to touch you more in an intimate way? Is it love? Is it an attraction? No right, pfft..she can't fall for Kazehaya's sister right?