The Terrifying Secret

Hidan and Kakuzu gain the upper hand. Ino and Choji are strangled by Kakuzu, while Kakashi escapes Hidan with a shadow clone. Shikamaru uses the masked entity's Lightning Jutsu in combination with water to free his teammates. Shikamaru realizes Kakuzu has five hearts, each of which must be killed to defeat him. He also reasons that separating Kakuzu from Hidan is the only way to defeat them, and so, he uses Shadow Possession Jutsu to lead Hidan into a dense forest. Kakuzu combines two of his hearts into a single entity and prepares to face Kakashi, Ino and Choji to get a replacement heart. He says that he has much more battle experience than Kakashi, having once faced off against the First Hokage, and uses the hearts of his defeated enemies to stay alive, and use other chakra natures. At the same time, after taking Hidan into a forest amidst numerous explosive tags, Shikamaru's Shadow Possession Jutsu runs out. Hidan manages to scratch Shikamaru on the face, and drinks the apparent spilled blood in preparation for his curse ritual to kill Shikamaru.