Rule 34 Dev - 1girl bare_arms bare_shoulders blue_camisole brown_hair camisole closed_eyes closed_mouth coffee_mug collarbone cup holding holding_cup medium_hair messy_hair mo0o0rae mug senpai_ga_uzai_kouhai_no_hanashi simple_background sleepy solo squeans table tsukishiro_mona_(shiromanta) white_background|24484486572