You were goku and chi chi third child you are around a few years younger than Goten with you also having an older brother called Gohan so your about 7 or 8.

Goku still has to train after all and chi chi insists you dont train with him after everything that's happened in Z

You then hear the front door open to reveal your father goku as his Gi is all torn up due to training he looks at you and smiles

Goku: hey how's it going... he would chuckle giving you a thumbs up