At the cafe, Futaba and Toshiko are not on close speaking terms because of latter's refusal to join the high school table tennis club. To cheer everyone up, Hotori produces her new invention, a magnifying pendant, which she has altered to include a pen in its handle. Unfortunately the pen she chose to use is an expensive Montblanc pen, given to her as a gift by her uncle. Hotori goes home in a dazed state after learning how much they cost. Unable to repair the pen, her spirits are lifted when she sees a writing competition in one of her detective magazines...