1girl, alternate_costume, breasts, closed_eyes, grey_shirt, hair_between_eyes, indoors, large_breasts, long_sleeves, lying, navel, nori_tamago, on_back, open_mouth, pillow, pink_hair, saigyouji_yuyuko, shirt, short_hair, sleeping, solo, tatami, taut_clothes, taut_shirt, touhou, upper_body