Update -- notes on April's Edits -- I added [[square brackets]] when I wasn't sure if my rephrasing clarified/changed the original asker's meaning too much. Please do edit my edits! I'm hoping that by adding my attempted clarifications, I can demonstrate how you can keep this more focused on writing/worldbuilding, and not on philosophic debate. I also added a bit of clarification about American Gods since I believe you meant the Neil Gaiman work, and not the religions of the indigenous peoples of this continent.
I'm writing a web comic that would become an animation. Originally I had the idea that I would discuss this in a kids book but I decided to do it in more teenage and young adult comics / animations.
This comic takes place in a second world. I've been going through a religious phase currently, so of course I'll play with that in my fiction. Basically, as the title suggests, I'm going to subvert "all myths being true" and tackle religion in my book. [[In other words, my comic will include stories]] of myths and religions.
Think of Neil Gaiman's 2001 novel American Gods , only we don't know if the myths and religions are "true" [[ for the world of my comic. ]]
I do want to portray religious people as good people, no matter how many bad religious people there are. (For example: I'm writing SOME Christians as evil but I will still write good christian characters.)
However there are lots of nuances and complications to religion [[that my work will explore, including more than]] whether or not the myths are true: the philosophical aspects, skeptics.
For example: There's one religion in my comic that's similar to Christianity. Only we don't know if the stories are true or not. It focuses on a character called "The Creator" who is a monotheistic god. Many characters don't believe in him due to "if he's all that good and powerful why doesn't he destroy all evil in the world?" however some characters do believe in him. However there's also the fact that there is an organization (inspired by The Crusaders) who use The Creator's name for ill will. Such as "let us destroy the non believers!"
[[suggestion from April to Asker for the paragraph above -- without reference to Christianity, but just the Creator Religion, can you explain an in-story dilemma that faces the characters you are focusing on?]]
There's also other religions inspired by real life religions, such as Shinto, Chinese Folk Religion, Paganism, Buddhism, Hinduism, etc.
So how do I write a comic / animation that tackles religion without offending religious people? How do I discuss religion in the comics themes without making it bad?
Edit : The story has changed a little bit. I also had to edit this question by giving specifics in the story beside "it tackles religion".
Edit : I'm not sure if this question is going anywhere. I don't think my question has enough specifics. I might delete this question and do it later when I find an actual problem? I don't know. What do you guys think?
Edit: I think I found the question I've been really trying to ask. But we'll have to see.