2girls, abyssal_ship, architecture, arms_up, blush_stickers, chibi, closed_eyes, collar, comic, detached_sleeves, dress, east_asian_architecture, high_collar, horns, long_hair, mittens, monochrome, multiple_girls, night, night_sky, sepia, single_horn, sitting, sky, star_(sky), sweater, sweater_dress, twitter_username