I love how Deimos looks in the bottom right panel! So cute.

Theory time: causing others pain in this place causes involuntary changes that disfigure the one causing harm. In this place, karma reflects on the outside.

Hehe not a bad theory

If so, then this world would be my ideal heaven! Evil could never remain hidden!

It's definitely designed in a way that no one has to deal with evil if they don't want to, and the evil people are in their own ideal planes of existence that they remain in until they grow out of them (If they ever grow out of them that is) The Astral Boughs is meant above all else to be about healing and rehabilitation.
Even the worst kind of people will get what they need most, with the hopes that they can move past their faults and become better people.

Well, that's an interesting concept I never thought could/would be used or brought into the subject of the afterlife! I mean, if there are planes of existence in the afterlife that people are supposed to remain in until they will grow out of their bad habits if they ever do or maybe just get worse over time then does the concept of hell and eternal torment and punishment even exist there or is simply existing there with your own burdens and hardships faults and horrible personality enough of and/or The ultimate form of punishment in and of itself in that hereafter for anyone who was a monster in their life Despite whether or not it was for just one moment in their life or the entirety of it? Not only that, but what about heaven itself!?!

Is there really any paradise that exists in those realms, especially since with those various varieties of a next life that allow anyone to indulge in their worst vices and indulgences Is there any point or even have a reason to exist outside all of those (?), or is there an alternative form to that as a mirror reflection, allowing people to find peace and eternal tranquility after breaking their bad habits in those Realms and move on to a better place than what they already had there?

Woo, this is a lot of curiosity and I'm loving it! People from the world had the concept of heaven and hell, but that was something they put upon themselves as a belief and a way to give people more reasons to be good. No one from the world figured out anything close to what the afterlife actually is. I would say the planes are all designed for different purposes, some are for rehab, some are for peace, some are for achieving dreams, some are for fun, some are for venting. For example there is a plane in which people who did not like being human can become wild animals on a human free world. While a different plane lets people re-experience a fresh, healthy childhood to grow up in. But then there are planes where for example someone who feels they need to be punished WILL be punished to the extent of whatever will feel satisfactory for them to make up for whatever they are punishing themselves for.
There are 7 main planes, with 26 sub-planes that are all crossover planes between the 7. It's generally enough to accommodate everyone in some way. Some people remain in their initial planes while others who want to explore other aspects of themselves can go to planes that relate to who they are.

I hope I don't sound like a cliché by asking this, but do any of those seven planes (outside of those 26 sub-planes you mentioned earlier) represent the 7 deadly sins or something closely related to that in some way or another?

They do indeed represent the 7 deadly sins, Carnalval is the plane of Lust which in this plane translates as indulgence.
As for the number of planes, there may be more out there that are more specialized but they'd be for very specific types of people who don't fit in the other planes for whatever reason. I'd say those planes are where more than 2 planes crossover. I just don't have the capacity to come up with more and this amount I have now makes a lot of sense for covering every possibility of 2 planes crossing over.

I hope you don't mind me making this comparison here but I almost somewhat sort of believe that this Afterlife comic series that you're working on is based on and/or off of a recently popular series or two from the animated show known as Hazbin Hotel and/or Helluva boss if that's and accurate enough guess on my part but if I making too much of an assumption of that I deeply apologize for doing that at all!

Hehe it was actually made to give my friend an alternative afterlife setting to Hazbin to play in! I wanted to give them a safe space to explore kinks and self love because it was something they were struggling with, and I ended up really loving the setting. The intro comic to the series was based on our first RP in the setting, but they asked that I replace their character with my own and I changed his dialogue a bit.

Wow, you made it for a friend but they insisted that you use your own character for the comic (?) Now that sounds like a really good and true friendship you have there with them And I hope that it can last you both for a lifetime and beyond that as well!

Yeah they're one of my best friends and we're constantly coming up with lore for different settings, there are only really a small handful of people who know my deep lore and spoilers for my projects and those are people who help me brainstorm for my projects

Wow (!), it really seems and sounds like they have quite a talent next to and or alongside your friend there and it really Helps you both out to create something really unique, amazing, and impressive such as this comic you've both recently created together some time ago, huh?

If you don't mind my asking as long as I'm not being too personal by bringing up this question at all what type or sort of kinks/fetishes do you two Take interest in and if I might be so bold as to add another Question onto that do you plan to use show or reveal it in a continuation of this comic sometime in the near or far future as long as that's not revealing too many spoilers too soon about the series currently right now at this point of time?

The main one will be TF, while other fetishes will mostly be sprinkled in here and there. I like micro, size difference, femdoms, gore, pet play, BDSM, tentacles, eldritch horrors, and blueballing. My friend is mainly into fat and humiliation and praise, and making others uncomfortable by being grotesque

Wow/Well, you have quite a wide range of interests based on all the kinks/fetishes that both you and your friend have, don't you?

If you don't mind if I ask you this question, as long as it doesn't overstep into any personal boundaries between either you or your friend involving your interests outside of the ones you already mentioned, do you also take an interest in kinks/fetishes such as vore, mpreg, unbirth, etc., And if so would you use or add any of those to/in this comic of your at this time or am I diving delving too deep into spoiler territory by asking that at all right now?

This is meant to be an expansive kink positive setting that allows for most fetishes to be possible, so I'm including a lot of what I know even if it's not specific to my own interests. The next comic set will show off a lot of what's available in the city for newcomers.

Adding to my last post to clarify better where I'm coming from. When taking a rather extensive kink test online, I was surprised to get the exact result I thought I would get if it was a result, as I had no idea it would actually BE a result.
The result states as such:
"The Kink Explorer"
"Curiousity is your compass. Driven by the thrill of the unknown, you seek new experiences, techniques, or ideas. Whether leading or following, you find joy in discovery. No kink is too niche; your playground is vast, and your appetite for exploration endless. For you, BDSM is a limitless adventure, where every path promises growth, excitement, and deeper self-understsanding."

And this is the whole core of the Astral Boughs as a series

Also are there really only those many planes and subplanes that exist in that hereafter/afterlife Or can it also be capable of having unlimited infinite space in that dimension Or would that be related to something else entirely outside of that altogether?

It's in the first part of the info

I hope it doesn’t seem like I’m rushing and/or overstepping into spoiler territory by asking this question but when they talk about favors being able to help them change their forms, does that mean any favor no matter how big or small it is or even how innocent or harmful it might be will that always play a factor in how they are/may/might be able to change their look and how they choose to look after doing those favors such as make themselves look more pleasing to the eye or even more horrific, terrifying, and demonic than they already do depending on whether the favor is good or bad and what is needed to complete the favor from start to finish?

Positively affecting people results in ability to change desired traits, wheras intentionally harming someone against their will in this plane will cause undesired traits. If someone desires to look monstrous they'll look more monstrous if they do positive favors for others, but then if they did something bad to someone they might end up looking much more pathetic.