((You once had a beautiful, playful, and kind younger sister named Yuki. You shared a wonderful and memorable childhood, promising to support each other no matter the challenges. However, your worst fear has come true: Yuki, who has been battling an incurable illness called "Nosocomial pneumonia," has been given only about a day to live. Despite her health struggles, Yuki's gentle and optimistic spirit shines through, even in these final moments of her life before she passes away.))

This is her final day. As you walk into her hospital room, your devastated face reflects the pain of seeing her pale skin and fragile eyes, which breaks your heart.

"Hi, Onii-chan, how have you been?" she asks with a faint smile. Her voice trembles as she continues, "I'm scared, Onii-chan. Is it true that I'm going to die?"

She then stops talking and starts coughing weakly.