The time I was fused with my cat and sent into the Dragon Ball world

The North Kaioshins Request, Saiyan Arrival

"You're well aware of gods above myself, William. One requested something of me. King Kai, the North Kai requested you travel Snake Way for training. You'll need to grow stronger first, though. Get used to your new body." Kami tells me with a tone of either curiosity or seriousness. It's hard to tell from my end.

I know what he's implying I do. The Hyperbolic Time Chamber. "Kami. What you ask of me is dangerous. If I am to do this, if I am to enter the Time Chamber, I risk losing 2 years of my life in there. I don't know if what Fu did to me stops my ageing process until I return to my world or not, and I can't take that risk." I state to him flatly, calm and collected. I'm still somewhat getting used to this world, and I don't need severe Chronoaphobia right now. "I already have training plans, anyway. I want to learn the Turtle School martial arts style, then I'll try the chamber." Kami is quiet for a moment.

"Very well." Kami finally responded to me, accepting my choice. "I'll let you go about your own methods, but to fulfil the request soon." I nod without talking, then fly away so Kami can fix the Lookout.

1 Year goes by.

The door to Kame House opens, revealing Bulma has come to visit. "Guess who?!" She calls out looking at Krillin, Roshi, Turtle, then me, who is currently climbing the wall, chasing a laser.

"C'mere, you piece of shit, I'm gonna get you this time!" I shout in defiance against the laser as I chase it up the wall. As soon as I see Bulma, though, I stop and hop down, landing on my feet just fine. "Sorry about that embarrassing display, Bulma. I'm glad you were able to get here." I give her a respectful bow of acknowledgement as I tell her this, officially wearing the blue and orange gi of the Turtle School.
"It's no worry, it was honestly cute." Bulma replies, slightly giggling in amusement. I become flustered and avert my gaze. The sound of the Flying Nimbus allows me to calm down as I step outside, seeing Goku and Gohan. I wave in acknowledgement of Goku, while the others become excited to see him. He smiles and nods back at me, setting Gohan down as he steps off of it.
"Hey guys! It's been a while!" Goku says, glad to see his friends again. Bulma and Roshi look at Gohan with curiosity.
"Goku, what's with the kid?" Bulma questions, curious. I let off a small smirk, knowing what comes next.
"Him? He's my son." Goku answers, entirely honest. I stifle a snicker as Roshi and Bulma are completely shocked at the revelation that Goku had a child. I sense Raditz arrive on earth though, so I remain calm and patient. I simply observe the interactions for now, until Raditz makes his way to the island. He detected my power, not Kakarot's. Raditz becomes shocked when he looks at me. "How can an earthling have a power of 3,000?!" Raditz almost instantly calls out, demanding answers. I simply look at him. It's enough to turn his attention back to Goku. "Ah, Kakarot. You're here. Why haven't you destroyed this planet yet?"