One-Punch Man Theory: Blast Is Connected To Saitama’s Power
Blast being Saitama's father makes sense from a thematic perspective too. One-Punch Man is built on the premise of subverting typical anime and manga tropes and one of the most common twists, especially in Shonen series, is revealing the protagonist to secretly have prestigious or powerful lineage. Examples of this can be found in One Piece, Naruto, Attack on Titan, Bleach and many more.
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