Originally Posted by
Comun
Doesn't sound like Roa. Even in the remake, he only does things for his own benefit. His nicer side always comes out in the form of being very receptive to others also benefitting from his actions. In creating the Burial Agency, he gave a safe space to all shunned freaks loyal to the church's cause, but the intention was just to get a safe space for himself and benefitting others was a bonus.
And the implied Pantheon plan, at least in how I interpret it, would see Roa making a hole in the firmament to continue his eternal journey in the cosmos beyond. Instead of tearing down the firmament and involuntarily exposing Earth to the truth of the cosmos, he wants to leave a hole open for his escape, and for the escape of anyone likewise interested in exploring the universe. This mirrors the Burial Agency situation. Roa is doing things for himself, but in a way that welcomes anyone trying to do the same. And he got 6 Ancestors contributing to his demo in France, he might be pushing a method beneficial to the Crimson Moon plan as well.
And then his partnership with Shiki in Ciel route is because the first run-in with Shiki made Arcueid lose her perfection, so Roa wasn't invested in her anymore. He always plays for his own benefit, but in this situation, where he has no horse in this race, he has no qualms about helping out a host body with their own causes. See also how he first let SHIKI stab Shiki in Arc's route before taking over to do his thing. Roa is a straight up bro when it comes to things he doesn't care about, I'll give you that, but Arcueid's situation couldn't be further from that.