zen, aizawa yuuichi, minase akiko, minase nayuki, kanon, 1boy, 2girls, age difference, aged down, blanket, blue eyes, blue hair, blush, book, braid, brown hair, child, empty eyes, hair intakes, hood, hoodie, long hair, lying, mature female, mother and daughter, multiple girls, oekaki, on back, on side, onee-shota, pillow, purple hair, school uniform, serafuku, short hair, sleeping, staring, twin braids, undressing