Any good anime/manga/game references for non "Black-and-White" portrayal of Angels, Devil, etc.?

Long story short, I'm writing a fanfic where one of my main characters (not the protagonist) is a direct descendant of a notable Demon but the dynamic I'm going for in regards to the two is that Demons and Angels, despite disliking each other, still consider the other as "natural" and "necessary cogs" so they are hostile to one another but aren't necessarily direct foes.

For example, the main portrayal I'll have for my version of Satan is the "Accuser" route who "betrayed" God because although he's still loyal to the cause, he wants to do it his way thus going for a self imposed duty of being an opposition because he thinks someone has to (emphasis on "thinks"). He's not a goody two shoes (heavens no) but he brings this sense of "either/both being an insufferable prick and/or the most polite host".

I know there's anime/manga/novels like High-school DxD and others who technically don't use it directly but references it but most tend to either downplay the dynamics or just switch things up (good devils, evil angels).

This whole thing is not really the main plot of my story but by virtue of the character's friendship to the primary MC, it'd be part of my world building (said character complaining about it from time to time).