Pastel Height Difference Friendship Poster

A nostalgic pastel Japanese stationery-style height comparison illustration in a vertical format. Background is soft pale pink textured paper with delicate brown line art and watercolor tones, featuring a faint small "Ai" mark in the upper-left corner. In the center stands a narrow cream-colored decorative height ruler marked from 0 cm to 200 cm with tick marks every 10 cm, topped with the vertical title 「身長計」. Two full-body girls in side profile face each other: - Left character: A petite girl named [ひな], [150cm] tall, facing right with hands relaxed at her sides. She wears a white short-sleeve blouse under a dark blue denim overall dress, loose white socks, and black high-top sneakers, with long dark brown hair in a high ponytail. Her face has a soft square blur. A dashed horizontal guide line aligns from the top of her head to the 150 cm mark on the ruler. - Right character: A taller girl named [あおい], [160cm] tall, facing left with hands in pockets. She wears an oversized beige knit sweater, loose faded blue jeans, and black-and-white low-top sneakers, with long dark brown hair in a high ponytail with wispy bangs. Her face has a soft square blur. A dashed horizontal guide line aligns from the top of her head to the 160 cm mark on the ruler. Text and graphic elements: - Top left ornate card: "Name", 「[ひな]」, "Height", "[150cm]" - Top right ornate card: "Name", 「[あおい]」, "Height", "[160cm]" - Left cloud thought bubble: 「あおい、まだ背が伸びた？羨ましいな…」 - Right cloud thought bubble: 「ひなはこのままで可愛いよ♡」 - Bottom central plaque below ruler: 「[大親友]」 flanked by two small hearts. Delicate, clean Japanese serif typography, warm muted brown lines, and charming vintage stationery aesthetic.