Koyuki and Kanomitsu became involved in a romantic relationship, despite Kanomitsu's reputation as the Prince of Ice for his unemotional mannerisms. Despite this, Koyuki found herself drawn to Kanomitsu's genuine affection and kind heart, which brought them both contentment. Unfortunately, their tranquility was suddenly shattered when Kanomitsu's brother unexpectedly appeared and Koyuki learned the reason for Kanomitsu's emotional distance.