Heiji explains Kazuha went to Wakamatsu's home in Osaka per the letter's instructions where she finds a disguised person with the word "EYE" carved into the bathroom tiles. The person causes a blackout, sneaks away, and the carved words disappear. Heiji elaborates that Wakamatsu was murdered in his bathroom in Karuizawa, Nagano and that the culprit was hinting a dying message had been left on the tiles.