The Speed of Lightning. A striking tribute to Zenitsu Agatsuma and his mastery of the First Form. The front of this mineral-washed tee features Zenitsu in his iconic iaido stance, eyes closed in total concentration, with the bold "THUNDER" typography looming behind him. The back reveals a massive, stylized dragon made of pure electric energy—a visual representation of the raw power unleashed by his blade. Set against a rugged grey canvas, this design captures the duality of Zenitsu: the fearful boy and the lethal warrior who moves faster than the eye can see. For those who find their strength in the heat of the moment.