This meme originates from the anime series "The Seven Deadly Sins," specifically from a scene featuring Escanor, the Lion's Sin of Pride. In a dramatic showdown against Estarossa, who arrogantly believes he's immune to Escanor's attacks, Escanor delivers the iconic line, "Who decided that?" just before he unleashes his true power. This moment is etched into meme culture as Escanor, portrayed with immense pride and confidence, flips the power dynamics entirely, embodying a quintessential anime power-up scene that fans love for its sheer audacity.