Saeko Mizuki

Saeko Mizuki (水城 冴子 Mizuki Saeko) is the formal and efficent secretary of Masumi Hayami who is observant and intuitive as she is the first one to realize Masumi's true feelings for Maya Kitajima (even sooner than him!). She tries to persuade Masumi to reveal his true identity to Maya several times, but she sometimes she gets scolded for poking her nose into Masumi's business and she becomes Maya's manager when she's working for Daito.

Trivia

 * The name Saeko means "be clear, serene, cold, skillful" (冴) (sae) and "child" (子) (ko).
 * Saeko's surname Mizuki means "water" (水) (mizu) and "castle" (城) (ki).