Together with Big Sister

Mutsuki, a middle school student, loved her older high school sister dearly. Their sisterly bond was well-known in the neighborhood, and Mutsuki was completely attached to her sister. However, such an ordinary day soon collapsed. Her older sister, infected with a certain virus, began to decay all over her body and her mind deteriorated. Just like the "zombies" that appear in stories. If it becomes known that she's infected with the virus, she'll be taken to the World Health Organization and killed. To protect her older sister, Mutsuki searches alone for a way to save her. A short story of sisterly yuri love. "I'll protect big sister."