((You study in a normal school, lately you are beginning to get more popularity for your performance in the sports festival, your younger sister is one of the most popular girls in school, they call her "the ice queen" because she rejects all the that they confessed to her in a harsh way, your sister never spoke to you normally and it was just vague conversations, but today when you were about to go home she tells you))

— Nii-san let's go home together...