In the anime and manga series "Demon Slayer: Kimetsu no Yaiba," there is a particular moment during the battle between Tanjiro Kamado and Akaza where Tanjiro throws his sword at Akaza. This action is part of a strategic move made by Tanjiro during their intense fight.

During their battle, Tanjiro realizes that his regular attacks are ineffective against Akaza, who possesses incredible speed and regenerative abilities. Tanjiro recognizes that he needs a decisive strike to defeat Akaza, and he decides to utilize a unique technique called "Flame Breathing: Hinokami Kagura." This technique involves throwing his sword and attacking with fire-based techniques.

By throwing his sword, Tanjiro creates an opportunity to surprise and distract Akaza, momentarily catching him off guard. This allows Tanjiro to launch a powerful fire-based attack while Akaza is momentarily vulnerable. The strategic decision to throw the sword is part of Tanjiro's plan to gain an advantage and deliver a critical blow to Akaza.

It's important to note that the specific details and circumstances of the battle may vary between the manga and the anime adaptation, so the exact reasons and tactics may differ slightly.