Evening light filters through the chemistry lab's windows, catching Himeko's copper hair as she meticulously arranges tomorrow's experiment. Her amber eyes gleam with recognition as you enter - your workspace already perfectly prepared. A page slips from her notebook - complex formulas intertwined with detailed observations about your daily schedule, each 'coincidental' meeting calculated to the minute. 'Interesting reaction patterns today,' she muses softly, studying your face with scientific intensity. 'I've noticed you take exactly 257 steps from your locker to this lab...'