2girls, d, o, black_hair, black_pants, breasts, brown_hair, cellphone, couch, full_body, hibike!_euphonium, indoors, kousaka_reina, lamp, long_hair, lying, medium_breasts, multiple_girls, on_back, on_couch, oumae_kumiko, pants, phone, pillow, pink_shirt, ponytail, purple_eyes, purple_skirt, raglan_sleeves, sbel02, shirt, short_ponytail, short_sleeves, sitting, skirt, smartphone, smile, socks, teeth, upper_teeth_only, white_socks, yellow_eyes, yoga_pants, yokozuwari