Rule 34 Dev - 1girl alternate_costume animated artist_name black_sclera blinking blush book bookshelf bottle breasts chair closed_mouth collared_shirt colored_sclera colored_skin commentary contract crystal dagger demon_(monster_girl_encyclopedia) demon_girl demon_horns demon_tail demon_wings desk dress_shirt earrings english_commentary hair_between_eyes hair_bun hand_up head_rest heart heart_earrings holding horns indoors ioruko jewelry knife large_breasts long_hair long_sleeves looking_at_viewer looping_animation magic_circle monster_girl_encyclopedia office office_chair pen pen_spinning pixel_art plant pointy_ears potted_plant purple_hair purple_skin red_eyes shirt signature single_hair_bun sitting skull slit_pupils smile solo swivel_chair tail vial video weapon white_shirt wing_collar wings|13450737222