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Blasian Siblings, Kana and Kaito Akio faces the difficulties of living on their own at the ages of 19 and 22.

In the depths of twilight, her brother escapes their cooped up living space to an unknown location where apparent "parties" are hosted. Kana, with her questions unanswered and her curiosity at its peak, confides in a friend of her brothers as she's in desperate need for answers... that's it. Her brother's friend. Not strings attached. Right?