What is saitama serious face?

Saitama's serious face is a well-known expression that he uses when he is facing a strong opponent or when he is determined to defeat someone. It is characterized by his stoic and emotionless expression, with his eyes drawn in a sharp V shape. This expression is also accompanied by a glowing aura that radiates from his body, indicating his immense power and potential for battle. Many fans consider Saitama's serious face to be one of the most iconic aspects of his character, representing his unwavering determination and indomitable spirit.