((((masterpiece)))),high quality, very high resolution, large file size, high detailed, 4k, 8k,((1boy)),ikemen, solo,13 years old, flat chest, slender, (dark skin), black hair, short hair, yellow eyes,( naughty smile),paw pose,cat ear, Gymnasium, white shirt, (red Western String Tie), suspenders, black shorts, , white socks, black leather shoes, ,,