I figure but is there any confirmation.
Huh, I think the question should be, is there any disconfirmation? There is nothing that says you cannot become a hermit if you are a non-human.
What he's saying is that Satori lives in Former Hell, which is technically outside of Gensokyo
Former Hell is in Gensokyo. Or Hell of Blazing Fires, whichever you want to call it.
Go down how? There must be an entrance somewhere to access it unless you want to dig through the ground until you reach it...
I don't know, what does it say in Subterranean Animism? Isn't there a cave entrance somewhere?
This Article might help.
And if not doing what your species are ment to do is a sin to Eiki, trying to avoid the thing you are born as sounds like a bigger sin. As such, Komachi is sent to look after her to see what she's planning and maybe to make her just give up her hermit act and make her go back on being back to oni. After all, Hell isn't there to send sinner in, but so that people won't do as much sin.
Whether it is a sin to Eiki has no effect on whether she would send Shinigami at you. She is not there to prematurely kill you to take you to hell. She is there to guide you, so that you do not get sent to hell when/if you die. Of course, being a Hermit is special.
Komachi is sent there, because Kasen is pretending? to be a hermit. Did something new happen in Wild and Horned Hermit? I'm many chapters behind, but I was under the impression that Kasen is working with/for Komachi.
Also, was there anywhere in Wild and Horned Hermit that confirms that she is not a Hermit?
You have to be a human to become a hermit. PMiSS lays this on in great detail. It doesn't make sense for anything non-human to become a hermit to begin with, since the whole purpose is to transcend human limitations in training the mind, body and spirit.
Could you point this out in Perfect Momento in Strict Sense? I don't believe it is written anywhere that confirms that you need to be a human to become a hermit.
As far as I could tell, in Japanese and Chinese lore, Sennin can be either human or otherwise.
Anyway, yeah what Clarste said.
I checked, Marisa does say back to Byakuren that there is definitely some hermit-like tengus.
One of the reasons why I dislike that hermit translation. It is unclear. If a Chinese or Japanese reader sees the word "sennin" they know the connotations of it. Sennin roughly translates to "divine being".
Remilia reaches the real moon using a rocket launched from Gensokyo, and Yukari specifically states that they can get there at all because the rocket launched from inside of Gensokyo, so these two "dimensions" border each other, or something.
The reason why Remilia is able to reach the real moon could be because they are from Gensokyo. However, this is arguable. More importantly, it is because of how it was created. They are using the 3 tier system and having Reimu guide them with the gods, it would likely have worked whether or not they were in Gensokyo.
Eirin was impressed that they created the rocket correctly to reach the true moon. She made certain they were going to reach it by putting the Lunar Veil there, which Patchouli mentions when Eirin and Kaguya "visited".
Ah, it's true, nobody goes to Higan in PoFV. I was confusing it with Muenzuka.
Yeah, PMiSS was fairly specific that Higan is not in Gensokyo.