5x3 - Dragon Ball Z: Dragon Box

Eight days remain before the Cell Games. Chichi decides to throw a birthday party for Gohan, who turned 11 inside the Room of Spirit and Time. Going through photo albums, she remembers the day they named Gohan. Goku also remembers how, not long after he was born, Gohan escaped a perilous situation with the tremendous force of his own Ki. As night falls, Gyumao and Kuririn join in the celebration of Gohan's birthday party.