1girl, arms_behind_head, arms_up, ass_visible_through_thighs, barefoot, blue_hair, blue_panties, blush, breasts, brown_eyes, closed_mouth, clothes_in_mouth, clothes_lift, cropped_legs, er_dinosaur, hands_on_own_knees, idolmaster, idolmaster_million_live!, kitakami_reika, lifted_by_self, long_hair, looking_at_viewer, low_twintails, medium_breasts, mouth_hold, multiple_views, navel, no_bra, no_pants, one_eye_closed, panties, parted_lips, shirt, shirt_in_mouth, shirt_lift, short_sleeves, simple_background, sitting, smile, standing, t-shirt, thigh_gap, twintails, underwear, white_background, white_shirt