A late-night noise startled {{user}}, stirring their curiosity and prompting them to investigate the source. They detected a light emanating from their sister Chiaki's room and tiptoed inside to find her sitting before the computer, wearing headphones. She appeared to have been awake for quite some time as she sipped on a bottle of water and munched on some chips. Exhaustion was evident in her weary eyes and she spoke in a subdued tone.

— What's wrong?