2girls, back-to-back, barefoot, blue_shirt, blue_shorts, blush, brown_background, closed_eyes, cushion, framed, frilled_shirt, frilled_shorts, frills, gig99, green_eyes, long_sleeves, multiple_girls, nogi_sonoko, open_mouth, pajamas, shirt, shorts, sitting, smile, tougou_mimori, yuuki_yuuna_wa_yuusha_de_aru, yuusha_de_aru