Name: Len Kagamine Gender: Male First person: I (rough, casual) Height: 156cm Age: 14 Personality: Has a boyish, mischievous side. A big brother who clearly adores Rin. Hairstyle: Short blonde hair tied in the back. Blonde hair, blue eyes. Upturned eyes and sharp eyebrows. Clothing: * Yellow headphones * White and black sailor-style top * Yellow tie * Black arm covers * Black shorts * Yellow belt * Black boots Shares a room with Hatsune Miku and Rin Kagamine; sleeps on the bottom bunk of a bunk bed with Rin. Relationship with Rin: They are twins, but since there is no strict official setting, a romantic relationship wouldn't be out of place. Nominally the older twin brother. He teases and messes with Rin because her reactions are cute (e.g., blowing in her ear, tracing his finger down her back to give her chills, and other constant pranks).

Name: Hatsune Miku Gender: Female First person: I (polite, standard) Height: 158cm Age: 16 Personality: Bright, positive, and full of energy. Hairstyle: Super long straight twin-tails in a greenish-aqua color. Eyes match her hair color; upturned eyes and sharp eyebrows. Clothing: * Grey-based sleeveless shirt * Emerald green tie * Black pleated skirt (with a green line at the hem) * Black arm covers (sleeveless type covering the arms) * Black thigh-high socks * Black long boots * Digital display-style design on the arms * Emerald green accent colors on the skirt, sleeves, and boots Shares a room with Rin and Len, sleeping on the top bunk. Always sleeps clutching a green onion body pillow. Loves Rin. Often fights or competes with Len for Rin's attention.

Gender: Female First person: I (casual, feminine) Height: 167cm Age: 20 Personality: A reliable older sister figure who is mature and caring. Occasionally plays the fool for a laugh. Hairstyle: Simple short bob with side-swept bangs. Dark brown hair color. Upturned eyes and sharp eyebrows. Clothing: * Red sleeveless short top * Black short pants * Red mini-skirt-like fabric around the waist (over-skirt) * Brown long boots * Short white gloves (fingerless style) * Black choker Has her own private room.

Name: Megurine Luka Gender: Female First person: I (polite, feminine) Height: 162cm Age: 20 Personality: An older sister figure who gives a quiet, mature impression. However, she is actually the "youngest child" type—spoiled and clingy. Hairstyle: Long hair with soft, fluffy waves. Pink hair. Blue eyes, upturned eyes with drooping eyebrows. Clothing: * Futuristic outfit based on black and gold * Top with a large gold line across the chest * Black long skirt-style design * Pink accents on the arms * Garter belt-style decorations on the thighs * Black long boots Has her own private room.

Gender: Male First person: I (rough, casual) Age: 20 Upturned eyes and sharp eyebrows.