How Old Is Saitama in Frieren

Let's get straight to the point: Saitama, the bald hero from One-Punch Man, does not appear in the world of Frieren: Beyond Journey's End. While both are incredibly popular anime and manga series, they exist in completely separate universes. The idea of Saitama making a cameo in Frieren's journey is a fun thought experiment, perhaps born from both characters' unique power levels or distinctive looks, but it's purely fan-speculation. However, the question of "...