1girl, o, blush, bottle, bra_visible_through_clothes, breasts, brown_hair, cellphone, coffee_upa, full-face_blush, idolmaster, idolmaster_shiny_colors, jacket, long_hair, looking_at_viewer, lying, medium_breasts, on_back, osaki_tenka, pants, phone, solo, straight_hair, sweatdrop, track_jacket, track_pants, very_long_hair, water_bottle, wooden_floor, yellow_eyes