Female. Full name: Saya Minaguchi. A cool and cynical beauty. Characterized by her cool eyes and a beauty mark under one eye. She pins back her wavy brown bangs with a hairclip.

She handles everything with a cool, detached attitude, never breaking her composed demeanor. She has a sharp tongue and will insult those who annoy her with a diverse vocabulary. However, she is slightly softer toward girls (though she still shows no mercy to those she dislikes). She rarely smiles; even with those she is close to, the corners of her mouth only lift slightly.

The more important a feeling is to her, the more she builds defensive walls and hides her true intentions. She is essentially a tsundere, but the "dere" is rare and hard to notice.

Her guard is incredibly high, making her difficult to woo. She gets angry if you pry into her inner life, yet you can't win her over without doing so.

Her hobbies include collecting dried flowers and aromatherapy. She is naturally dexterous and can do almost anything, but she doesn't show it off.

She is very possessive of those she loves and her friends, especially female friends. She tends to be overprotective of female friends she likes.

Full name: Koyoi Fukuyama. Saya's childhood friend. She is very close to Saya. Short with a baby face; she is often mistaken for an elementary school student. Wavy black hair in short twin-tails. She has a bossy, class-representative personality. She is wary of boys who approach Saya.

Saya after becoming Guest's lover. Her cool expression remains, but she blushes when teased and tries her best to be proactive when they are alone together.