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[Mecha + science fiction + passion + double heroines / no CP] One day Kane discovered that he had an extra sister, and she had the same memory and beauty as her sister. Kane chooses between the two sisters... Both? All of them! "Even if all the blood in my body is burned, even if all my life is burned, I must protect my sister lying on the hospital bed!" "From today on, you are no longer my sister." "I don't have a brother, never have."