Dragon Ball Z, Vol. 2: The Lord of Worlds (Dragon Ball Z, #2) | 
pick9/10:
Meeting King Kai as Goku arrived in Hell was awesome to see! The fact that he was trained there shows just how strong he‘s going to be when he returns to Earth!
I also loved seeing Piccolo start taking a fatherly role in Gohan‘s life and beginning to embrace the good that remains within him.