Create a charming hand-drawn colored pencil illustration of a young couple walking together, inspired by soft Japanese/Korean lifestyle sketchbook art. The girl has long wavy dark hair, a baseball cap, oversized denim jacket, long flowing black skirt, and casual sandals. The boy wears a relaxed baseball cap, oversized light-blue denim jacket over a warm orange shirt, loose black pants, and casual sneakers. They are holding hands and walking naturally together, with the girl slightly leaning toward him. Use delicate black pencil outlines, visible hand-drawn pencil strokes, subtle cross-hatching, soft watercolor and colored-pencil shading, gentle blush on their cheeks, minimal facial features, cute rounded proportions, relaxed youthful poses, and a warm romantic mood. Keep the composition full-body and centered, with plenty of clean off-white paper background around the characters. Add subtle imperfections and paper grain to make it feel like an authentic illustrated sketchbook page rather than digital art. Soft muted colors, cozy aesthetic, elegant simplicity, high detail, natural clothing folds, beautiful hand-drawn texture, editorial illustration quality, vertical portrait composition, 4:5 aspect ratio.