7x5 - Dragon Ball Z: Dragon Box

As a result of Boo's intense anger, his body splits into two! A one-on-one battle then breaks out between the newly formed, pure evil Boo and the original Boo from which he sprang. As a breathtaking battle between the two Majin carries on, (good) Boo's transformation beam is blown back at him by (pure evil) Boo, by which he is turned into chocolate and eaten! Upon doing so, yet another transformation begins...