In Mob Psycho 100, fans with a sharp eye might spot a fun Easter egg that connects the series to another hit by the same creator. Reigen Arataka, the charismatic con man and mentor figure, has a cellphone wallpaper that features Saitama, the bald-headed hero of One Punch Man.
This hidden detail is a playful nod from the creator, ONE, who made both series. It adds a layer of humor for longtime fans and hints at the shared artistic style and quirky humor that defines both shows. While it doesn’t mean the two worlds are officially linked, it's a fun crossover that rewards viewers who pay attention to the small things.
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