千歳くんはラムネ瓶のなか [Chitose-kun wa Ramune Bin no Naka] #4

Two school-uniformed girls share the cover of this fourth volume — a dark-haired girl in a white blouse and dark jacket meets the gaze of a silver-haired girl in a blue plaid skirt, both rendered with the soft, expressive style that defines this series. The pastel bubble motif framing them neatly echoes the ramune-bottle charm of the title. It's a quietly compelling image that captures the interpersonal tension and warmth at the heart of Chitose-kun wa Ramune Bin no Naka.