How Nobara deals with Bill while still fighting for justice thing. She probably comprises with Bill a lot. If Nopher keeps Bill's traveling through dimensions power. She could offer to help him dealing with his multi dimensional enemies. After all to Nobara they're all cursed spirits so she'd have no problem with it. And she'd let Bill handle them with tons of sadism. And beside he'd be bored with most of the spirits and would be glad to kill em. But would try and work with the main villains lol
Oh hoh there's a LOT of attempts of negotiations between Nobara and Bill. Both really, really love to stand their ground and get their way like I initially talked about in one of my first posts about Nopher. Frankly, I've thought about it and I think Nopher might have Bill's travel powers/his powers but with restrictions. Axolotl is monitoring Nopher pretty much all the time so if Bill makes any attempts to abuse it, he will face repercussions (it's pretty much a binding vow). I mean Tokyo's already got Sukuna roaming around so that's already enough as it is lol. For certain though, the moment Bill & Sukuna meet, both demons will secretly find a way to get out of their vessels n do what they really want.
Fighting cursed spirits vs multidimensional beings for Nopher will probably be an entirely different subject on its own though. Ngl probably a little complicated in terms of story development for me amt lol. I stated previously that Bill's powers are nerfed so he can't just zap things outta existence like he did with Time Baby that one time LMAO. They do damage, but it's not as "damaging" yk? He's gonna have to force himself to learn to fight physically-ish with Nobara AND with an entirely new body. It's a little weird for Nobara though because for her, the fact she's able to even deal damage to multidimensional beings thanks to Bill means she's gotten stronger.