1boy 1girl bed bedroom boots bow calendar_(object) comic commentary demon_girl demon_horns demon_tail demon_wings eyebrows_visible_through_hair gentsuki greyscale hair_bow highres horns kuroki_tsutomu lily_(gentsuki) long_hair monochrome on_bed original pointy_ears refrigerator revealing_clothes shirt shorts sitting sitting_on_bed speech_bubble succubus t-shirt tail thick_eyebrows thigh_boots thighhighs two_side_up wings