8k, detailed character sheet, concept art, Executor the Ex Foedere, short white hair, red eyes, handsome man, handsome male, stern expression, emotionless expression, cold expression, halo, heavenly aesthetics, holy aesthetics, suit, priest, korean artstyle, korean male, arknights executor, darkest academia, detailed costumes, utilitarian, intelligent use of composition, smooth lines, dreamy scenes, life scenes, realistic yet romantic, realistic and hyper-detailed renderings, concept art --ar 9:16 --niji 6 --s 400