5x12 - Dragon Ball Z: Dragon Box

Goku's full-power Kamehame-Ha blows the entire upper half of Cell's body away! However, despite missing his top half, Cell regenerates his cells and recovers! Goku once again starts fighting fiercely, but while Cell still has plenty of Ki to spare, Goku continues to fight at his full strength and gradually shows signs of fatigue. Then, all of a sudden, Goku declares that he is conceding to Cell!!