Imagine a cover with a soft pastel gradient background that transitions from a warm, golden hue at the top (representing the provincial past) to a cooler, academic blue at the bottom (representing the university setting). In the center, there is an artistic rendering of Ayef and Easton, depicted in a tender moment that hints at their connection. Ayef is shown in both her younger and older selves, reflecting the passage of time and the growth of her feelings. The title "Fifteen, Twenty Five" is prominently displayed in an elegant font, with the author's name in a simpler, complementary typeface below. This approach ensures the cover is visually appealing, resonates with the story's themes, and attracts potential readers by conveying the essence of the romance and the characters' journey.

verybadimagenegative_v1.3, ng_deepnegative_v1_75t, (ugly face:0.8),cross-eyed,sketches, (worst quality:2), (low quality:2), (normal quality:2), lowres, normal quality, ((monochrome)), ((grayscale)), skin spots, acnes, skin blemishes, bad anatomy, DeepNegative, facing away, tilted head, {Multiple people}, lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, worstquality, low quality, normal quality, jpegartifacts, signature, watermark, username, blurry, bad feet, cropped, poorly drawn hands, poorly drawn face, mutation, deformed, worst quality, low quality, normal quality, jpeg artifacts, signature, watermark, extra fingers, fewer digits, extra limbs, extra arms,extra legs, malformed limbs, fused fingers, too many fingers, long neck, cross-eyed,mutated hands, polar lowres, bad body, bad proportions, gross proportions, text, error, missing fingers, missing arms, missing legs, extra digit, extra arms, extra leg, extra foot, ((repeating hair))