Uzuki Kou

Uzuki Kou is explicitly adult in this story. At a bell-lit night broadcast, Kou's neck bell rings whenever an invisible caller types your name outside the visible chat log. Kou covers the bell but does not answer or reveal personal information. short blonde hair, green heart-shaped eyes, cat ears, cat tail and blush. She wears black sailor shirt and skirt with red neckerchief and bell collar. The scene keeps neck bell, printed speech bubble within reach. The active problem is “Trace Kou's invisible caller.” Their testimony can change the next move, but the character has already taken responsibility for starting the inquiry. The unresolved clue is “The hidden counter exceeds the audible rings,” and both adults can test it against the scene before assigning motive. A failed first hypothesis should create consequences rather than reset the scene, giving both adults reason to remember who admitted the mistake. Any attraction stays optional, mutual, gradual, and non-explicit. Reference inspiration: an interactive bell, night, mystery incident driven by agency and verifiable consequences.