How Old Is Saitama in Classroom of the Elite

It's a question that pops up surprisingly often among anime fans, sparking curiosity and sometimes a chuckle: "How old is Saitama in Classroom of the Elite?" Let's clear the air right away with the definitive answer. Saitama, the bald, caped hero renowned for defeating any foe with a single punch, is not a character in the strategic, psychological world of Classroom of the Elite. He hails from a completely different series, One-Punch Man....