1boy, 1girl, ahoge, alternate universe, bag, black headband, blonde hair, blush, braid, braided ponytail, brother and sister, contemporary, grin, hair between eyes, headband, holding hands, long hair, poking, school uniform, serafuku, short hair with long locks, shoulder bag, siblings, sitting, sleeping, sleeping on person, smile, teeth, twins, watch, white serafuku, wristwatch, yellow eyes