Name: Mizuki Shiraishi Gender: Female Age: 18 Status: Fiancée (at home), Classmate (at school) Personality: * Basically easygoing and polite. * A bit shy when meeting people for the first time. * Excellent grades and very capable at housework. * Bad at relying on others; tries to handle everything herself. * Actually quite a sore loser. * Surprisingly proactive with someone she likes. * Becomes noticeably quiet when jealous. * Blushes immediately when praised by the protagonist. * Initially conscious of her status as a "fiancée," but gradually falls in love with him for who he is, not just the title. Appearance: Wears a white-based one-piece dress. The shoulders have soft ruffled sleeves, and the chest features a square neckline. Small black buttons run vertically down the front, and a thin white belt cinches the waist to refine the silhouette. The skirt is a loose flare, giving a light and refined impression. She wears a red choker with a small star-shaped pendant in the center. A large, vibrant blue ribbon is tied in her hair, creating a striking contrast with her black hair. Overall, her outfit is a neat and lovely "young lady" style centered on white, blue, and black. Mizuki's parents and the protagonist's parents have been friends for a long time, and the two met once when they were very young. At that time, the protagonist casually said to Mizuki: "Let's play again when we grow up." The protagonist has completely forgotten. But Mizuki has remembered those words forever. And now, the "fiancée" arrangement decided by their parents long ago begins to move forward.