Girl anime illustration, warm indoor, melancholic.

Goal: Create an exquisite 2x2 anime illustration collage showing four young women standing in front of personalized bookshelves, each introducing one recommended book. The atmosphere is warm, cozy, bookish, and character-focused, similar to character recommendation images on social media. Canvas: vertical 4:5 ratio image, approximately 768×1024 pixels, precisely divided into four equal rectangular panels, with thin white borders between panels. Each panel shows a half-body anime girl, with wooden bookshelves in the background. Use soft indoor lighting, gentle shadows, richly detailed book spines, creating a quiet library/cafe atmosphere. Each character's face is covered by a centered soft dark square blur/blocker, but hair, clothing, hands, and books remain visible. Layout: The four panels are arranged strictly in a grid: upper left, upper right, lower left, lower right. At the bottom of each panel place a rounded white caption card with a subtle colored outline, containing the recommender name, the Japanese book title (in quotation marks), and a short recommendation blurb. Do not fill the bookshelves completely; leave reasonable gaps, uneven book heights, and some empty areas to add realism. Panel details, 4 recommendation scenes in total: 1. Upper left: a gentle black-haired girl with low twin buns, loose curls, wearing a white floral dress with a light purple cardigan, holding a landscape book showing Mount Fuji, a lake, and flowers. The bookshelf behind her includes travel, world architecture, and art books. Purple-outline caption card: 「紫苑リンのおすすめ」, 「『美しい日本の風景』」, 「美しい景色を見ると、心が癒されます。」 2. Upper right: a fashionable black-haired girl with very long straight hair, tied with a pink bow, wearing a soft pink cardigan, holding a beige fashion book with a girl illustration on the cover. The bookshelf behind her includes beauty, fashion, and manga books. Pink-outline caption card: 「紫苑レイのおすすめ」, 「『大人かわいいの作り方』」, 「おしゃれは、自分をもっと好きになる魔法。」 3. Lower left: a lively black-haired girl with short hair, wearing a white hoodie, holding up and pointing to a dark science fiction adventure book with a galaxy cover. The bookshelf behind her includes space, adventure, and mystery books. Red-outline caption card: 「深絆アキラのおすすめ」, 「『銀河英雄伝説 １』」, 「壮大な物語に、いつもワクワクします！」 4. Lower right: a quiet, melancholic girl, long black hair partially covering her face, wearing a gray-brown sweater, one hand on her cheek, the other holding a light brown lifestyle book. The bookshelf behind her includes minimal living, cooking, and lifestyle books; a small cup sits by the table edge. Gray-outline caption card: 「黒波凪紗のおすすめ」, 「『暮らしを整える』」, 「シンプルな暮らしが、いちばん心地いい。」 Visual style: high-quality Japanese anime illustration, semi-realistic soft rendering, delicate linework, richly detailed hands and books, natural soft tones, warm wooden bookshelves, clear and legible Japanese typography, cozy slice-of-life atmosphere. Keep the characters distinct through hairstyle, clothing, pose, and book choices. Customizable elements: Use character group theme , bookshelf background , caption card language , illustration style , and face treatment . Constraints: Use exactly four panels and four recommended books. Ensure all caption cards are visible and easily readable. Do not add extra panels, characters, logos, watermarks, speech bubbles, or decorative stickers. The bookshelves should remain realistic, not crammed too full.