While Nero was tempted to try and follow Bahamut, the Colosseum fight and left him drained. It was tempting to dismiss that, since all he'd done was eat a few hits before getting literally firebombed to death. But in the back of his head he was just happy that Cibus was happy with the outcome... as was some of Team Spectrum. Nero imagined the others didn't want to be there in the first place, like Bahamut.
On the way back to his lodgings, however, he had discovered Bahamut had chosen to... rest on the guild's roof. Sprawled out like some sort of distorted, gray satellite. Nero could've talked to the necrozma then and there, but it wasn't worth it. He need ammunition. He would comeback later...
... later meaning the next day, as Nero had fallen asleep. And by the time he was up, it was morning. Nero first looked around his bed for the newspapers clippings he'd collected, only for his figurative heart to sink when he found no traces of them. The window next to the bed was open and there was a considerable draft in the room that prompted his fire-typing to switch on while he was sleeping. I guess a gust of wind carried them all away. Great.
It was going to be much harder to convince Bahamut of anything without his evidence. But Nero wasn't one to quit without trying. So, off he trotted along the city streets, covered in bits of frost and morning dew. One of the Owens had said things were getting toward the end of spring, but Destiny Village was a naturally cold place. When was the last time he'd gone on a walk through cold air like this? The climate controlled domes and metallic rooms of the Ultra Recon Squad base were so boring. Nero would have to savor his little vacation.
He found Bahamut still on the roof. Had the guy even moved since yesterday? Outside his tail limply dangling off the side of the building, Nero wasn't sure. The silvally walked closer to the tail.
"Y'know, as nice as sunlight is, I don't think it's a solid cure for the blues, buddy," he called. The reds of his body turned jet black when Bahamut picked his large head up and glared at Nero.
"What do you want?"
"To talk."
"I have nothing to say to you, you overgrown child." Bahamut lowered his head back onto the ceiling. "Go romp around with that other mismatched mutt. Blow up a building or something. I don't care."
Nero frowned. "Well, I care. How much longer are you going to pretend like you're not in pain, huh?" He tilted his head. "Like you're not spending every drop of energy suppressing those shadows to avoid doing something the others will see as awful?"
No response. Then, without warning, Bahamut rolled away from Nero, falling off the building with a resounding thud.
The hard way, then. Sighing, Nero started around the building, not even bothering to look and see if he'd been followed.