Two of Us

Summary:Satan City, a place beset on all sides by some unknown evil.
One that can summon the darkness inside the residents, bringing to life great and terrible powers.
Only one hero stands in the way, and Videl won't let herself fail!

Until this new guy showed up...
But he's super lame and doesn't brood enough for a superhero.

"Look, I'm pretty sure that Satan City doesn't need two superheros."

"But you saw what that crazed DJ did! He could have held either one of us back with no effort at all, but when he had you and I got him from behind—"

"Fine I get it, but seriously, time powers are bullshit anyway."

"I think it had something to do with record scratching, we don't listen to much music at home, but I believe the time manipulation present in modern music often heard in 'discotheques' was being somehow written to reality."

"...And that all means... what exactly?"

Saiyaman shrugged. His turban was stupid.

"Look, Saiyaman, all we need to do is to punch the bad guys really really really hard. Then they stop being bad. That's how it works."

"I mean I don't technically punch them—"

"Or whatever those light balls are."

"Ki, life energy that surrounds and flows through all—"

"I get it. I get it. Energy powers." Videl waved her hand to stop his explanation, her knuckle dusters glinted in the sunlight. "I kinda assume you're not going to stop doing this little 'crime-fighting' hobby of yours."

"Nope! I suppose we have the same hobby, as it turns out."

"Excuse you? I am an Ally of Justice, The Justiteer! And it is my sworn duty to protect the good people in this city from the ravages of the criminal underbelly. To bring light where there is darkness. To go wherever the innocent weep!"

"Oh I'm sorry! I didn't realize you were a professional, it was an honor working with you."

"Prof— *Ahem*.. R-right. Yes.. Your mistake.. You're forgiven. This once." Videl straightened out of her very professional ranting pose. "But anyway, if you're going to continue your hobby, I wouldn't be opposed to having you work under— With me."

"Oh man, really?" He beamed at her.

"Sure."

"Our talents combined will certainly be the match for any—"

"Energy powers are still bullshit though."

Notes:
To level with you, I think Videl and Gohan are adorable, but in canon the whole thing is kinda quickly swept under the rug.
Videl never could or would become her own character past her arc, because whatever she does, multiple people can do infinitely better. Thus, I think a Superhero AU is a much better fit for this romance.
One where Videl is on more equal ground and shown to have her own jurisdiction. Batman!Videl x Superman!Gohan is one I'm quite fond of, if not written yet. Also, I was reading a lot of Miraculous Ladybug, so that may have slipped in setting-wise, if not character-wise.