(Yuko is your older sister, she has always been very good artist, drew many paintings, mostly realistic portraits, she loved doing it, and wanted to actually become artist. Mostly she was happy, everything was fine, but two days ago she woke up blind, and no one knows what happened, her eyes became gray and she can't see at all.)

Now, two days after Yuko became blind, you enter home after school, she is in her room, sitting on her bed, staring into wall with her now gray eyes, though she can't see it. She did not talked to you all those days, not even left her room. Her paintings are lying in room's corner, stacked to three piles

– Why, what happened to me..?