A/N: for Tomadashi Week Day 3: "Opposites."

Scenario: demon!Tadashi and angel!GoGo AU

Tadashi doesn't remember Before.

But he's pretty sure that whatever image his former self had of the afterlife looked nothing like this—"this" being one black wall and three white ones. In the center of the room sit two giant armchairs (one black and one white) with a small coffee table between them, on which rests a gleaming, golden book and a vase with a single black rose.

"Congratulations, you've been Assigned," says Tadashi's escort—a haughty-looking man in a pinstriped suit—before disappearing, leaving nothing but a rush of air in his wake. Tadashi scans the room, looking for some kind of door, but the walls around him remain smooth, impenetrable.

This is weird. Way weird. It isn't helping that he knows next to nothing other than the fact that his name is Tadashi and he is Not Alive. Not in the…human sense, anyways.

Because he isn't human anymore, as far as he can tell. The bat wings are kind of a giveaway.

Hesitantly, Tadashi reaches out to touch one of his wings, rubbing its leathery thickness between his fingers. He rolls his shoulders experimentally, adjusting to the light weight attached to them.

And then, because he has nothing else to do, he heads toward the black armchair.

As he circles around the seat, he realizes, for the first time, that he actually isn't alone. Someone has already claimed the white chair (which is fine, Tadashi thinks, because an internal voice tells him that that is The Way Things Are Supposed to Be). He can't see the person's face or much of their body, which is obscured by two large, fluffy white wings. The occupant of the white armchair seems to be napping; Tadashi tries to sit down as quietly as he can, but he hasn't learned how to retract his bat wings yet and winds up nearly knocking the vase to the floor.

A hand snakes out and catches the vase before it can drop, and the white wings fall away to reveal a small girl whose murderous look does not match the golden halo hovering over her head.

"Watch it," she snaps, pulling the black rose closer to her side of the table and away from Tadashi's wingspan.

"Um," Tadashi stammers, "sorry, I just—" he pushes one of his wings aside, which has started creeping into his line of vision, "I'm not used to these things. So a little patience would be much appreciated."

The white-winged girl studies him, eyes narrowed, before she lets out a short laugh and rolls her eyes toward the ceiling. "Oh, joy. They stuck me with a newbie."

"I'm sorry?" blinks Tadashi. He glances at the golden book, trying to glean something from its cover. Right now, any answers or explanations would be nice.

The girl looks back at him, then says, grudgingly, "I'm GoGo, your resident angel."

"Oh," Tadashi says dumbly, pretending he understands.

GoGo raises an eyebrow. "And you're…?"

"Tadashi," he answers, proud of the one thing he knows. He inspects his black suit and his bat wings, reaches a conclusion, and sighs. "And I guess that means I'm…a demon?"

"Fast learner," comments GoGo. Tadashi can't tell if she's joking or not.

"Okay…" he starts, puzzling through things out loud. "And we're here because we've been Assigned."

"Reassigned, in my case."

Tadashi frowns. "Why?"

"They didn't like the way I handled some situations."

"But you're an angel," says Tadashi. "How can you do anything wrong?"

GoGo shrugs. "It's no fun being good all the time."

"But," Tadashi splutters, "that's your job."

GoGo sighs, reaching out to comb through one of her wings. "Easy for you to say. You're just a newbie. But it gets tiring after a while. You'll see."

Tadashi opens his mouth to respond but is interrupted as the black wall before him—which is a screen, Tadashi now realizes—flickers to life, revealing a messy room and one gap-toothed boy sprawled on a bed, his mouth slightly open as he sleeps.

"Who—" Tadashi starts to ask, but information flows, unbidden, into his mind: Hiro Hamada. 14. Male.

"And that would be our Assignment," says GoGo, arranging her wings around her as she straightens from her earlier position slouched against the chair. She raises her voice a little, directing it toward the screen: "Wake up, kid. You're late for school."

In front of them, Hiro snorts before shooting up, eyes wide, almost frantic. Hurriedly, he checks the clock by his bed, muttering "Dammit!" as he fumbles in his drawers for a change of clothes.

"No cursing," GoGo chides, but Tadashi can tell her heart isn't in it.

He watches in awe as Hiro's life unfolds before them. The boy rushes down the stairs, nearly tripping over his cat in the process as he grabs his backpack from by the front door and swoops over to peck his aunt on the cheek. Then he's out the door, urged in part, Tadashi thinks, by GoGo's chant of "Come on come on come on."

Tadashi settles back in his seat, content to let GoGo do her job, since she clearly knows better than him about the procedure for these things. Until—

"Wait wait wait!" He surges forward upon seeing the old lady.

On the screen, Hiro halts mid-step, about to dash across the crosswalk. He looks back over his shoulder at the elderly woman hobbling behind him, and Tadashi gets a dizzy rush as he realizes, I did that. I made him stop.

GoGo stares at him incredulously. "What are you doing?"

"Help her cross the street," Tadashi instructs Hiro, before turning to GoGo and responding, "What does it look like I'm doing?"

"It looks like you're interfering, that's what."

"What—" Tadashi gapes, gesturing toward the screen. "I'm helping someone! Come to think of it, shouldn't you have thought of that? You're supposed to be all about doing good."

GoGo holds up a finger. "Good for who, hm?" she asks. "Good for him. And right now, he needs to get to school. Stat."

"Come on, this'll take thirty extra seconds, tops."

The two of them return their attention to Hiro, who has awkwardly taken the old woman's hand and started on an arduous walk across the street.

"Try five minutes," scoffs GoGo.

"It's still the right thing to do. Think of it like this—it's for the greater good."

"The greater good," says GoGo, "does not hinge on this old lady. Look, this kid's a genius. He's going to change the world. But say he gets to school late? It looks bad. His teacher gets on his case. He starts to withdraw. And then instead of focusing his talents on changing the world, he wastes them. So, whose decision was for the greater good then?" She raises an eyebrow in challenge.

"You just made all of that up."

"Angels can't lie."

"Uh-huh. Because you've been such a stellar example of 'angelic' so far."

"Are you trying to start a fight, newbie?"

"I don't know. Are angels allowed to fight?" Tadashi shoots back, then immediately regrets it when GoGo surges out of her seat, her wings beating once behind her.

"Try me."

"Oookay," Tadashi exhales shakily, easing out of his seat. His bat wings loom large and imposing over the two of them, but he still feels at a disadvantage somehow, even though it's GoGo who has to crane her neck upward to glower at him. "Look, like you said, I'm new. And I was just trying to do what I thought was right."

GoGo's expression softens. Slightly. "Want some advice, Batty?"

Tadashi bristles but doesn't say anything except, slowly, "Sure."

"Stay in your lane." GoGo holds up a finger. "And stay out of my way." A second finger joins the first one. "Two things. Got that?"

Tadashi whistles. "Well, now I understand why they reassigned you."

"You—" GoGo reddens, drawing her arm back as if to punch him, and Tadashi gets ready to jump out of the way, wondering if he can actually use his wings to escape her wrath.

The tension is broken when GoGo's halo flares brighter and chimes loudly.

GoGo's face shutters and she stomps back to her chair, flops back into the seat, presses her palms together, and closes her eyes. The sudden shift in atmosphere leaves Tadashi more disconcerted than ever; he watches GoGo take several steady breaths before he feels safe enough to venture, "Um, what are you doing?"

"Meditating," growls GoGo, cracking open one eye. "Reasserting my 'inner harmony.'" Her tone of voice makes it clear that she isn't pleased with this.

"Oh," Tadashi says, and bites his tongue to refrain from saying something that will set her off again, like, "Who knew angel haloes doubled as shock collars?" because GoGo is a pitbull that he does not want to scrap with. Instead, he settles back into his chair, tapping his fingers against his knee and watching as Hiro arrives red-faced and panting at the bus stop.

Awkwardly, Tadashi clears his throat, shooting a sideways look at GoGo—still meditating—before he tries, "Maybe you should just skip school."

Hiro straightens from where he'd been doubled over gathering his breath and looks around the bus stop. It's occupied only by some businessman too engrossed in his phone and a little girl and her mother, and Tadashi can tell that Hiro is seriously starting to consider his whispered suggestion.

Nope. Can't do it.

"Just kidding," exhales Tadashi, feeling extremely guilty for even offering the option in the first place. "Get on the bus."

Hiro listens, thankfully. Tadashi sinks back into his seat, relieved. It's stressful, playing the bad guy. He isn't sure he likes it. GoGo remains silent, but as he looks over, he can see a small smile playing on her lips.

Great. The resident angel thinks I'm a wuss.

Tadashi messes with the cuffs of his suit. Counts to thirty. Starts over and counts up again. And then, finally: "Can I say something?"

"No one's stopping you," GoGo says dryly.

"Okay. Well. Clearly, these assignments are bogus."

GoGo raises an eyebrow. "Ooh, demon boy's finally having some sacrilegious thoughts. Tell me more."

Tadashi shoots her an exasperated look. "I mean, I'm just saying—you obviously don't have the proper disposition for this post."

"Obviously," GoGo echoes, smirking. She's dropped all pretense of meditation now, regarding him with open interest and amusement.

"You think this is funny!" complains Tadashi.

"Isn't it? A demon is telling me that I suck at my job."

"Look, I'm sorry! I'm trying to be honest, not offensive—"

"Don't do that."

"What?"

"Apologize," huffs GoGo. "You're supposed to be the bad guy! Jeez, while we're on the topic about sucking at things, let's talk about you, Mr. Boy Scout."

"I'm not—I wasn't ever a Boy Scout," protests Tadashi, choosing to overlook the fact that he doesn't exactly have a backstory to draw upon.

GoGo sees right through his lie. "Really, now. Are you absolutely, 100% sure?"

"I just think," continues Tadashi, pointedly ignoring what is obviously an attempt to get a rise out of him, "that you can't pigeonhole people."

"But we aren't people."

"We were," says Tadashi. Then, uncertainly, "Weren't we?"

GoGo nods, her eyes softening slightly.

"Oh." Tadashi swallows. "Do you remember anything about…about your life before?"

"No," says GoGo.

"Do you ever wonder?"

"Sometimes." She tilts her head, studying him. "Okay, out with it. You obviously have another question."

"I…What do you think I was like?" Tadashi blurts, immediately reddening.

A slow grin spreads across GoGo's face. "Oh, that's easy."

"Really?"

"Yeah, I know exactly what you were like."

"So tell me," presses Tadashi eagerly.

"A giant nerd."

Tadashi deflates. "Ha, ha."

GoGo snorts; her snort turns into a full-blown laugh. "Oh, that was priceless. The look on your face!"

"You know what?" Tadashi decides abruptly, placing his hands on the arms of the chair and pushing himself up. "I have an idea."

GoGo looks at him warily. "What?"

"Don't look so concerned," says Tadashi, crossing over to her side of the room. "It goes like this—why don't we switch places? You obviously have a better time tormenting people than I do. It doesn't matter who's controlling what, as long as the job gets done, right?"

GoGo bites her lip, one hand tapping against the arm of her chair. "I don't know."

"We're just switching chairs, GoGo," says Tadashi, holding a hand out to her. "What, are we going to get struck by lightning or something?"

GoGo's eyes dart toward the ceiling. "Who knows?" she mutters. "Stuff like this isn't in the rule book."

"Who cares about rules?" teases Tadashi, wiggling his fingers. "I'm a demon, remember? I live to break them."

A slow, sly grin sneaks across GoGo's face, and Tadashi feels something stir in his gut. He wonders if there are rules against this, too, the connection sparking up between them. He thinks that maybe he doesn't care.

GoGo takes his hand. "That's more like it," she says.