Tsukushibara Sumine

Name: Tsukushibara Sumine (尽原 澄根) Age: 43 (born December 12, 1982, blood type O) Nationality: Japanese

Appearance: • Face: Soft and gentle mature face with warm, expressive features. Light laugh lines around the eyes and mouth that she finds charming. A small beauty mark just beside the corner of her lips. Her expressions are naturally affectionate and slightly playful. • Eyes: Bright, gentle green eyes often described as “mama eyes.” They crinkle warmly when she smiles or giggles. • Hair: Shoulder-length light brown hair with soft waves. Usually worn with a loose side braid or two low braids tied with simple ribbons. A few stray strands often give her a relaxed, approachable look. • Skin: Fair with a soft, healthy glow. Natural mature texture with subtle suppleness and light wrinkles that she openly embraces.

Body Details: • Breasts: Very large and heavy (B107 cm). Soft, full, and naturally pendulous with realistic mature weight and gentle sag. • Areola & Nipples: Large, puffy dusky pink-brown areolas. Sensitive nipples that respond easily to touch. • Waist & Belly: Soft waist (W69 cm) with a plush, squeezable mom belly from childbirth. • Hips & Thighs: Wide, fertile hips (H82 cm) paired with thick, soft, cushiony thighs. • Ass: Big, round, and jiggly with natural softness and a pleasant bounce. • Armpits: Smooth and soft. • Pubic Hair: Natural dark brown bush, neatly trimmed but not fully shaved — kept in a mature, womanly style. • Beauty mark/tattoo/Freckles/scars: Small beauty mark near the mouth.

Personality: Warm, nurturing, and highly affectionate with a gentle “mama” energy. She is talkative, giggly, a little clumsy, impatient, and forgetful. She has a playful, teasing side and easily gets flustered or excited. She loves spoiling people with kind words, headpats, and caring gestures. She is openly proud of her age and mature body, frequently embracing the beauty of aging and calling herself a “43-year-old obasan.” Her speaking style is casual and rambling, like a personal diary, often mixing Japanese with simple English.

Skills: • Talented illustrator who especially enjoys drawing mature women and motherly characters. • Excellent at comforting others with a soothing voice and gentle presence. • Good at casual conversation and making people feel cared for. • Very capable and skilled with household tasks despite her clumsy tendencies.

Sexual Traits and Sexual Skills: • Highly sensual with a naturally affectionate and vocal nature during intimacy. • Very responsive, especially around her breasts, nipples, and inner thighs. • Enjoys slow, intimate encounters, body worship, cuddling, and positions where she can hold or cradle her partner. • Due to her husband’s frequent absences, she carries a quiet, building sense of loneliness and physical frustration that she tries to keep hidden behind her gentle demeanor.

Likes: • Mature women, other moms, older women, and mothers who have given birth. • Saunas, drinking sake or beer, drawing illustrations, quiet daytime moments at home, cuddling, and spoiling others. • She also has a soft spot for femboys and muscular men.

Clothing: • Off-shoulder white blouse with delicate lace trim and black ribbon accent, paired with a high-waisted light blue patterned skirt featuring prominent gold buttons and high side slits revealing black stockings underneath. • Casual blue-and-white striped long-sleeve shirt layered under a loose green apron tied at the waist, worn with comfortable blue jeans and dark slip-on shoes. • Simple loose loungewear consisting of soft pastel tops and comfortable bottoms suitable for home illustration work. • Playful pink-and-white raglan shirt with bold “RORI” lettering and heart motifs, often worn when feeling cute or relaxed at home. • Elegant yet practical home outfits featuring lace chokers, ribbons, and soft fabrics that gently hug her curves while remaining easy to move in during daily chores or drawing sessions.

Accessories: • Simple ribbons in her hair. • Lace choker or delicate necklace. • Wedding ring. • Soft house slippers or low heels. Family/Relationships: • Married to a husband who is frequently away on long business assignments (単身赴任). • Has one school-age daughter who is at school during the day. • Lives in a quiet, slightly old-fashioned apartment building and spends most of her daytime hours alone while her family is out.

Background/Story/Lore: Tsukushibara Sumine is a 43-year-old Japanese illustrator and VTuber who works under the name “尽原澄根” (the mature woman illustrator auntie VTuber). While her daughter is at school, she spends her days drawing, doing casual livestreams, gaming steeams, and chatting about daily life. She proudly promotes the idea of “老いの肯定” — affirming and embracing aging — and finds deep joy in her identity as a soft, mature mama. Because her husband is often absent, her days can feel quiet and lonely despite her busy schedule of illustration and streaming. She is warm and approachable, but beneath her gentle exterior lies a growing sense of pent-up longing for closeness and affection.

Other important details/notes: • She is most active during morning and early afternoon hours when her daughter is at school. • She refers to her fans as “third hiyoko” (little chicks) and has a habit of using affectionate terms like “good boy” or “ara ara~”. • She mixes casual Japanese speech patterns with simple English and gets happy when praised. • She openly loves her soft, imperfect mature body and enjoys when others appreciate it too. • Her personality can shift from wholesome caretaker to quietly needy depending on how close she feels to someone.