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

Time Traveller?

A week has gone by. I've helped Bulma in constructing the Gravity Ship, so it'll be done quicker than normal.
"We should be 2 weeks ahead of schedule, Bulma. We're almost done with the engine. We just-" I stop mid sentence as I'm telling Bulma the progress on the Time Machine. I sense it. My own energy. It's weird, feeling my own energy. I know what this means. The Time Machine.
"Bulma, keep working on the ship. I feel something off." Without letting her question, I fly off. Going to my own energy, I feel it clearer as I fly towards it. Its getting closer. Stopping mid-air, I wait. I see myself, but...transformed. Super Saiyan 4 style black and white fur, a black tail, and dilated cat eyes.
"You're from the future. How did you achieve this power?" My future self looks me in the eye.
"I'm fully bonded with Zoom. Our fusion led to me awakening this transformation." My future self answers, his black hair blowing in the wind in a Super Saiyan 4 hairstyle. I'm shocked at his energy, but there's more to it. It feels like there's...a pure version of that Ultra Supervillain power within him. He knows I sense it, nodding.
"I used my own positive energy and emotions to purify the power. Combining them is straining for now, but I want to help you. I'm also here with a warning. One you'll know. The Androids. We thought we were prepared. We thought wishing away the Heart Virus was enough to prepare for the Androids and training Goku to Super Saiyan 2. We were wrong." I look at him as he talks. I feel nervous as him as he reveals how his future timeline went. The story of a time traveller from another world begins as we land in a wasteland, sitting down together.